KOA Corporation

Japan

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Date
New (last 4 weeks) 1
2025 January 1
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IPC Class
H01C 7/00 - Non-adjustable resistors formed as one or more layers or coatingsNon-adjustable resistors made from powdered conducting material or powdered semi-conducting material with or without insulating material 92
H01C 13/00 - Resistors not provided for elsewhere 87
G01R 15/00 - Details of measuring arrangements of the types provided for in groups , or 54
H01C 1/14 - Terminals or tapping points specially adapted for resistorsArrangements of terminals or tapping points on resistors 54
H01C 1/148 - Terminals or tapping points specially adapted for resistorsArrangements of terminals or tapping points on resistors the terminals embracing or surrounding the resistive element 43
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NICE Class
09 - Scientific and electric apparatus and instruments 25
11 - Environmental control apparatus 2
19 - Non-metallic building materials 2
20 - Furniture and decorative products 2
Status
Pending 48
Registered / In Force 355
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1.

ELECTRONIC COMPONENT

      
Application Number 18712815
Status Pending
Filing Date 2022-10-31
First Publication Date 2025-01-30
Owner KOA CORPORATION (Japan)
Inventor
  • Miyashita, Kyohei
  • Uchimori, Mizuki
  • Hayashi, Daigo

Abstract

An electronic component that can secure a creepage distance between electrode terminals has a structure in which an upper portion having a rectangular shape in plan view and a predetermined thickness, a housing portion formed at the center on an undersurface side of the upper portion to house a resistance element, and first, second, and third protruding portions, each of which extends in a vertical direction from the undersurface side of the upper portion to serve as a leg portion, are formed. A concave portion having a predetermined depth is formed between the first and third protruding portions and between the second and third protruding portions on the undersurface side of the upper portion, such that the concave portion extends from one side in a widthwise direction on the undersurface side to the other side through the housing portion to secure a long creepage distance between electrode terminals.

IPC Classes  ?

  • H01C 1/028 - HousingEnclosingEmbeddingFilling the housing or enclosure the resistive element being embedded in insulation with outer enclosing sheath
  • H01C 1/14 - Terminals or tapping points specially adapted for resistorsArrangements of terminals or tapping points on resistors

2.

BUILT-IN CHIP RESISTOR FOR SUBSTRATE, RESISTOR BUILT-IN MODULE, MANUFACTURING METHOD OF RESISTOR BUILT-IN MODULE, AND TRIMMING

      
Application Number 18579460
Status Pending
Filing Date 2022-06-22
First Publication Date 2024-10-17
Owner KOA Corporation (Japan)
Inventor
  • Iguchi, Tomoki
  • Kinoshita, Miyahito
  • Eto, Kohji
  • Noguchi, Tomofumi

Abstract

A metal plate resistor that is a built-in chip resistor for substrate has a plate shape including a resistance body, a first electrode bonded to a first end of the resistance body with a first clad portion, and a second electrode bonded to a second end of the resistance body with a second clad portion.

IPC Classes  ?

  • H01C 1/14 - Terminals or tapping points specially adapted for resistorsArrangements of terminals or tapping points on resistors
  • H01C 17/245 - Apparatus or processes specially adapted for manufacturing resistors adapted for trimming by removing or adding resistive material by mechanical means, e.g. sand-blasting, cutting, ultrasonic treatment

3.

METAL PLATE RESISTOR AND METHOD FOR MANUFACTURING METAL PLATE RESISTOR

      
Application Number JP2024005575
Publication Number 2024/209807
Status In Force
Filing Date 2024-02-16
Publication Date 2024-10-10
Owner KOA CORPORATION (Japan)
Inventor
  • Kubota, Michio
  • Kitahara, Hiromitsu

Abstract

The present invention relates to a metal plate resistor and a method for manufacturing a metal plate resistor. A metal plate resistor (1) is provided with a plate-shaped resistive element (6) formed from a metal material. The resistive element (6) includes a first slit (10A (10B)), a second slit (10B (10A)), and a through hole (11).

IPC Classes  ?

  • H01C 3/00 - Non-adjustable metal resistors made of wire or ribbon, e.g. coiled, woven, or formed as grids
  • H01C 13/00 - Resistors not provided for elsewhere
  • H01C 17/02 - Apparatus or processes specially adapted for manufacturing resistors adapted for manufacturing resistors with envelope or housing

4.

KOA

      
Application Number 1813846
Status Registered
Filing Date 2024-08-21
Registration Date 2024-08-21
Owner KOA CORPORATION (Japan)
NICE Classes  ? 09 - Scientific and electric apparatus and instruments

Goods & Services

Temperature sensors; inclinometers; pressure sensors; pressure gauges; manometers; gas sensors; anemometers; flowmeters; sensors (measurement apparatus), other than for medical use; detectors; measuring devices, electric; electric current control devices; rotary converters; phase modifiers; electric resistances; fuses; electronic inductors; electrical inductors; electrical cells and batteries; ammeters; voltmeters; electric conductors; electric resistors for telecommunication apparatus; electric coils; fuses for telecommunication apparatus; telecommunication machines and apparatus; LED monitors; thermistors; electronic circuits; integrated circuits; electronic components; resistance wires; electrodes; magnetic cores.

5.

TEMPERATURE SENSOR

      
Application Number 18573823
Status Pending
Filing Date 2022-05-30
First Publication Date 2024-10-03
Owner KOA CORPORATION (Japan)
Inventor
  • Toyoda, Susumu
  • Nakamura, Keishi

Abstract

Provided is a temperature sensor which can enhance strength more easily. The temperature sensor comprises a resin film and a titanium metal foil laminated on the resin film. The titanium metal foil constitutes a conductive pattern. In an example, the titanium metal foil is subjected to a surface modification on a surface facing the resin film. In an example, a thickness of the titanium metal foil is within a range of 3-10 μm. In an example, the resin film contains a thermoplastic resin, and a thickness of the resin film is within a range of 20-80 μm.

IPC Classes  ?

  • G01K 7/18 - Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat using resistive elements the element being a linear resistance, e.g. platinum resistance thermometer
  • H01C 7/02 - Non-adjustable resistors formed as one or more layers or coatingsNon-adjustable resistors made from powdered conducting material or powdered semi-conducting material with or without insulating material having positive temperature coefficient
  • H01C 7/22 - Elongated resistive element being bent or curved, e.g. sinusoidal, helical

6.

WIND VELOCITY MEASURING SYSTEM

      
Application Number JP2024007943
Publication Number 2024/202958
Status In Force
Filing Date 2024-03-04
Publication Date 2024-10-03
Owner KOA CORPORATION (Japan)
Inventor
  • Yazawa Miki
  • Fujii Yasutaka
  • Katase Yasuyuki
  • Miyazawa Tsuyoshi
  • Yasue Toshiya

Abstract

The objective of the present invention is to provide a wind velocity measuring system having improved usability. A wind velocity measuring system according to the present invention is connected to a terminal device provided with a display panel, and displays a wind velocity measured in a measurement region on the display panel, wherein: the wind velocity is measured by sensor units disposed in the measurement region, and the wind velocity measuring system is provided with either a display function for displaying display portions corresponding to the sensor units on the display panel, and enabling each display portion to be moved arbitrarily on the display panel in accordance with the arrangement of the corresponding sensor unit, or a display function for displaying display portions corresponding to the sensor units on the display panel, and enabling a color display of each display portion to be changed in accordance with a light emission state of the corresponding sensor unit.

IPC Classes  ?

  • G01P 13/00 - Indicating or recording presence or absence of movementIndicating or recording of direction of movement
  • G01D 7/10 - Indicating value of two or more variables simultaneously using a common indicating element for two or more variables giving indication in co-ordinate form

7.

KOA S Smart Option

      
Application Number 1812838
Status Registered
Filing Date 2024-08-08
Registration Date 2024-08-08
Owner KOA CORPORATION (Japan)
NICE Classes  ? 09 - Scientific and electric apparatus and instruments

Goods & Services

Temperature sensors; inclinometers; pressure sensors; pressure gauges; manometers; gas sensors; anemometers; flowmeters; sensors (measurement apparatus), other than for medical use; detectors; measuring devices, electric; electric current control devices; rotary converters; phase modifiers; electric resistances; fuses; electronic inductors; electrical inductors; electrical cells and batteries; ammeters; voltmeters; electric conductors; electric resistors for telecommunication apparatus; electric coils; fuses for telecommunication apparatus; telecommunication machines and apparatus; LED monitors; thermistors; electronic circuits; integrated circuits; electronic components; resistance wires; electrodes; magnetic cores.

8.

KOA Smart Option

      
Application Number 1811882
Status Registered
Filing Date 2024-08-08
Registration Date 2024-08-08
Owner KOA CORPORATION (Japan)
NICE Classes  ? 09 - Scientific and electric apparatus and instruments

Goods & Services

Temperature sensors; inclinometers; pressure sensors; pressure gauges; manometers; gas sensors; anemometers; flowmeters; sensors (measurement apparatus), other than for medical use; detectors; measuring devices, electric; electric current control devices; rotary converters; phase modifiers; electric resistances; fuses; electronic inductors; electrical inductors; electrical cells and batteries; ammeters; voltmeters; electric conductors; electric resistors for telecommunication apparatus; electric coils; fuses for telecommunication apparatus; telecommunication machines and apparatus; LED monitors; thermistors; electronic circuits; integrated circuits; electronic components; resistance wires; electrodes; magnetic cores.

9.

FLOW RATE SENSOR

      
Application Number JP2024006514
Publication Number 2024/195432
Status In Force
Filing Date 2024-02-22
Publication Date 2024-09-26
Owner KOA CORPORATION (Japan)
Inventor
  • Yasue Toshiya
  • Katase Yasuyuki

Abstract

The objective of the present invention is to provide a flow rate sensor in which it is possible to automate a resistance adjustment function of a bridge circuit. A flow rate sensor according to the present invention includes a flow rate detection resistance element serving as a temperature-sensitive element in a bridge circuit, and uses a flow rate signal from the bridge circuit to calculate a flow rate in a micro-controller, the flow rate sensor being characterized in that the bridge circuit includes a variable-resistance element that comprises a plurality of fixed resistors having different resistance values and a switch circuit for switching connections of the fixed resistors, a resistance value of the variable-resistance element being varied by switching the fixed resistors that are connected, thereby enabling the microcomputer to automatically adjust the resistance value of the variable resistance element.

IPC Classes  ?

  • G01F 1/696 - Circuits therefor, e.g. constant-current flow meters

10.

CHIP RESISTOR AND CHIP RESISTOR MANUFACTURING METHOD

      
Application Number JP2023045258
Publication Number 2024/185256
Status In Force
Filing Date 2023-12-18
Publication Date 2024-09-12
Owner KOA CORPORATION (Japan)
Inventor
  • Nagata Akihiko
  • Kaneko Homare
  • Motojima Yuuichi

Abstract

Provided is a chip resistor with excellent anti-corrosiveness by reliably preventing sulfidation corrosion of front electrodes. A chip resistor 1 of the present invention comprises: a rectangular insulation substrate 2; a pair of front electrodes 4 provided at both ends of the main surface of the insulation substrate 2; a resistor 3 which connects the pair of front electrodes 4; a pair of back electrodes 6 provided at both ends of a back surface of the insulation substrate 2; a pair of protection electrodes 5 composed of a highly sulfur-resistant material provided to overlap with at least ends of the inner sides of the pair of front electrodes 4; a first insulation layer 7 composed of an inorganic material which covers the resistor 3 and the ends of the inner sides of the pair of protection electrodes 5; a second insulation layer 8 composed of an organic material provided on the first insulation layer 7; a pair of end surface electrodes 9 that extend to both end surfaces of the insulation substrate 2 and electrically conducts the front electrodes 3 and the back electrodes 6; and an external plating layer 10 which covers the pair of end surface electrodes 9, wherein the end surface electrodes 10 are provided in a range from the top surface of the protection electrodes 5 to an end of the second insulation layer 8.

IPC Classes  ?

  • H01C 7/00 - Non-adjustable resistors formed as one or more layers or coatingsNon-adjustable resistors made from powdered conducting material or powdered semi-conducting material with or without insulating material
  • H01C 17/00 - Apparatus or processes specially adapted for manufacturing resistors

11.

SENSOR SYSTEM

      
Application Number JP2024006144
Publication Number 2024/185492
Status In Force
Filing Date 2024-02-21
Publication Date 2024-09-12
Owner KOA CORPORATION (Japan)
Inventor Katase Yasuyuki

Abstract

The purpose of the present invention is to provide an optimal sensor system for measuring a three-dimensional space. A sensor system (1) includes: hosts (2); and sensors (3) that are connected to the hosts and that acquire data, the sensor system being characterized in that a plurality of the hosts are daisy-chained together, and a plurality of the sensors are daisy-chained to each of the hosts. It is preferable that the hosts and the sensors each include a higher-level communication control unit that performs communication with a higher-level device and a lower-level communication control unit that performs communication with a lower-level device.

IPC Classes  ?

  • H04L 12/28 - Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
  • G01P 5/10 - Measuring speed of fluids, e.g. of air streamMeasuring speed of bodies relative to fluids, e.g. of ship, of aircraft by measuring thermal variables
  • G08C 15/00 - Arrangements characterised by the use of multiplexing for the transmission of a plurality of signals over a common path

12.

CHIP-TYPE CURRENT FUSE

      
Application Number 18653678
Status Pending
Filing Date 2024-05-02
First Publication Date 2024-08-22
Owner KOA CORPORATION (Japan)
Inventor
  • Ichikawa, Hiroshi
  • Oguchi, Tomonori
  • Karasawa, Atsushi

Abstract

The chip-type current fuse is configured to include a fuse element 5 formed between a first front electrode 3 and a second front electrode 4. The fuse element 5 includes: a first linear portion 5a that has an end connected to the first front electrode 3 and extends in a direction toward the second front electrode 4; a second linear portion 5b that has an end connected to the second front electrode 4 and extends in parallel to the first linear portion 5a in a direction toward the first front electrode 3; and an inclined linear portion 5c that links the first linear portion 5a and the second linear portion 5b to each other. The inclined linear portion 5c is connected at an acute angle to each of the first linear portion 5a and the second linear portion 5b.

IPC Classes  ?

  • H01H 37/76 - Contact member actuated by melting of fusible material, actuated due to burning of combustible material or due to explosion of explosive material

13.

MULTI-LINKED DEVICES

      
Application Number JP2024001181
Publication Number 2024/171703
Status In Force
Filing Date 2024-01-18
Publication Date 2024-08-22
Owner KOA CORPORATION (Japan)
Inventor Fujii Yasutaka

Abstract

The objective of the present invention is to provide multi-linked devices that can be synchronized easily and accurately without the need for complex software correction processing. The multi-linked devices according to the present invention comprise a plurality of devices, including an upper device, a lower device, and one or more intermediate devices located between the upper device and the lower device, the devices being connected in series by means of a communication line to enable data transmission and reception between the devices. The multi-linked devices are characterized in that: a data acquisition request command for controlling the timing at which prescribed data are acquired is associated with each device; the data acquisition request commands for each device are transmitted earlier the farther the corresponding device is from the upper device; and all the data acquisition request commands for the intermediate devices are transmitted sequentially before the data acquisition request command reaches the lower device.

IPC Classes  ?

  • H04L 12/28 - Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
  • G08C 15/06 - Arrangements characterised by the use of multiplexing for the transmission of a plurality of signals over a common path successively, i.e. using time division
  • H04Q 9/00 - Arrangements in telecontrol or telemetry systems for selectively calling a substation from a main station, in which substation desired apparatus is selected for applying a control signal thereto or for obtaining measured values therefrom

14.

KOA

      
Serial Number 79405974
Status Pending
Filing Date 2024-08-21
Owner KOA CORPORATION (Japan)
NICE Classes  ? 09 - Scientific and electric apparatus and instruments

Goods & Services

Temperature sensors; inclinometers; pressure sensors; pressure gauges; manometers; gas sensors; anemometers; flowmeters; sensors (measurement apparatus), other than for medical use; detectors; measuring devices, electric; electric current control devices; rotary converters; phase modifiers; electric resistances; fuses; electronic inductors; electrical inductors; electrical cells and batteries; ammeters; voltmeters; electric conductors; electric resistors for telecommunication apparatus; electric coils; fuses for telecommunication apparatus; telecommunication machines and apparatus; LED monitors; thermistors; electronic circuits; integrated circuits; electronic components; resistance wires; electrodes; magnetic cores.

15.

KOA

      
Application Number 235373100
Status Pending
Filing Date 2024-08-21
Owner KOA CORPORATION (Japan)
NICE Classes  ? 09 - Scientific and electric apparatus and instruments

Goods & Services

(1) Temperature sensors; inclinometers; pressure sensors; pressure gauges; manometers; gas sensors; anemometers; flowmeters; sensors (measurement apparatus), other than for medical use; detectors; measuring devices, electric; electric current control devices; rotary converters; phase modifiers; electric resistances; fuses; electronic inductors; electrical inductors; electrical cells and batteries; ammeters; voltmeters; electric conductors; electric resistors for telecommunication apparatus; electric coils; fuses for telecommunication apparatus; telecommunication machines and apparatus; LED monitors; thermistors; electronic circuits; integrated circuits; electronic components; resistance wires; electrodes; magnetic cores.

16.

OXYGEN SENSOR ELEMENT AND METHOD FOR MANUFACTURING SAME

      
Application Number 18567069
Status Pending
Filing Date 2022-06-09
First Publication Date 2024-08-15
Owner
  • NAGAOKA UNIVERSITY OF TECHNOLOGY (Japan)
  • KOA CORPORATION (Japan)
Inventor
  • Okamoto, Tomoichiro
  • Iguchi, Kenichi
  • Ota, Yukiko
  • Komatsu, Ryosuke
  • Tanaka, Tetsuro
  • Nishizawa, Katsuhide

Abstract

An oxygen sensor element that can achieve electric power saving without losing sensor characteristics has a structure in which an outer surface of a ceramic sintered body as a sensing layer made of a composition LnBa2Cu3O7−δ (Ln denotes rare earth element) is covered with heat insulating layers. A heat insulating material having a composition Ln2BaCuO5 is used for the heat insulating layers, and that composition Ln2BaCuO5 is added with 20 mol % of LnBa2Cu3O7−δ. This allows a sintering behavior of the heat insulating layers to come close to a sintering behavior of the sensing layer, and can thus prevent the occurrence of separation of the layers and cracks. The oxygen sensor element has a sandwich structure where the sensing layer is sandwiched between the heat insulating layers, thereby reducing the amount of heat dissipated from the sensing layer, and making it possible to achieve electric power saving.

IPC Classes  ?

  • G01N 27/12 - Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating resistance of a solid body in dependence upon absorption of a fluidInvestigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating resistance of a solid body in dependence upon reaction with a fluid
  • G01N 33/00 - Investigating or analysing materials by specific methods not covered by groups

17.

OXYGEN GAS DETECTING ELEMENTAL DEVICE AND METHOD FOR USING OXYGEN GAS DETECTING ELEMENTAL DEVICE

      
Application Number JP2023044726
Publication Number 2024/166525
Status In Force
Filing Date 2023-12-13
Publication Date 2024-08-15
Owner
  • NAGAOKA UNIVERSITY OF TECHNOLOGY (Japan)
  • KOA CORPORATION (Japan)
Inventor
  • Okamoto, Tomoichiro
  • Ko, Zoku
  • Kawahara, Toshihisa
  • Iguchi, Kenichi
  • Ota, Yukiko
  • Komatsu, Ryosuke

Abstract

1+x2-x3δδ (where RE represents a rare-earth element, δ represents the oxygen nonstoichiometry amount, and a substitution amount x satisfies 0≤x≤2) and which is partially substituted with an element selected from group 2 elements in the periodic table and/or an element selected from lanthanoid elements.

IPC Classes  ?

  • G01N 27/12 - Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating resistance of a solid body in dependence upon absorption of a fluidInvestigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating resistance of a solid body in dependence upon reaction with a fluid

18.

OXYGEN SENSOR ELEMENT

      
Application Number JP2024000699
Publication Number 2024/166606
Status In Force
Filing Date 2024-01-12
Publication Date 2024-08-15
Owner
  • NAGAOKA UNIVERSITY OF TECHNOLOGY (Japan)
  • KOA CORPORATION (Japan)
Inventor
  • Okamoto Tomoichiro
  • Iguchi Kenichi
  • Ota Yukiko
  • Komatsu Ryosuke
  • Kou Zoku
  • Tanaka Tetsuro

Abstract

Provided is an oxygen sensor element that enables reduced power consumption while maintaining sensor sensitivity. To achieve this purpose, there is provided an oxygen sensor element that utilizes a hotspot phenomenon in which a voltage is applied to a sensor element in which a constricted part 7 is formed in the longitudinal center of a ceramic sintered compact 5 which is a sensing layer, and the constricted part 7 becomes red hot, wherein the amount of heat radiation from the sensing layer is reduced and power consumption can be reduced by setting the difference ∆L1 between L1 and Lh such that 0.33 mm ≤ ∆L1 ≤ 1.0 mm, for example, where L1 is the length of the constricted part 7 in the longitudinal direction, and Lh is the length, in the longitudinal direction, of a region that includes the constricted part 7 and in which the temperature difference relative to the hot spot is 90% or less.

IPC Classes  ?

  • G01N 27/12 - Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating resistance of a solid body in dependence upon absorption of a fluidInvestigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating resistance of a solid body in dependence upon reaction with a fluid

19.

KOA S SMART OPTION

      
Serial Number 79405586
Status Pending
Filing Date 2024-08-08
Owner KOA CORPORATION (Japan)
NICE Classes  ? 09 - Scientific and electric apparatus and instruments

Goods & Services

Temperature sensors; inclinometers; pressure sensors; pressure gauges; manometers; gas sensors; anemometers; flowmeters; sensors (measurement apparatus), other than for medical use; detectors; measuring devices, electric; electric current control devices; rotary converters; phase modifiers; electric resistances; fuses; electronic inductors; electrical inductors; electrical cells and batteries; ammeters; voltmeters; electric conductors; electric resistors for telecommunication apparatus; electric coils; fuses for telecommunication apparatus; telecommunication machines and apparatus; LED monitors; thermistors; electronic circuits; integrated circuits; electronic components; resistance wires; electrodes; magnetic cores.

20.

KOA Smart Option

      
Application Number 235218500
Status Pending
Filing Date 2024-08-08
Owner KOA CORPORATION (Japan)
NICE Classes  ? 09 - Scientific and electric apparatus and instruments

Goods & Services

(1) Temperature sensors; inclinometers; pressure sensors; pressure gauges; manometers; gas sensors; anemometers; flowmeters; sensors (measurement apparatus), other than for medical use; detectors; measuring devices, electric; electric current control devices; rotary converters; phase modifiers; electric resistances; fuses; electronic inductors; electrical inductors; electrical cells and batteries; ammeters; voltmeters; electric conductors; electric resistors for telecommunication apparatus; electric coils; fuses for telecommunication apparatus; telecommunication machines and apparatus; LED monitors; thermistors; electronic circuits; integrated circuits; electronic components; resistance wires; electrodes; magnetic cores.

21.

KOA S SMART OPTION

      
Application Number 235366500
Status Pending
Filing Date 2024-08-08
Owner KOA CORPORATION (Japan)
NICE Classes  ? 09 - Scientific and electric apparatus and instruments

Goods & Services

(1) Temperature sensors; inclinometers; pressure sensors; pressure gauges; manometers; gas sensors; anemometers; flowmeters; sensors (measurement apparatus), other than for medical use; detectors; measuring devices, electric; electric current control devices; rotary converters; phase modifiers; electric resistances; fuses; electronic inductors; electrical inductors; electrical cells and batteries; ammeters; voltmeters; electric conductors; electric resistors for telecommunication apparatus; electric coils; fuses for telecommunication apparatus; telecommunication machines and apparatus; LED monitors; thermistors; electronic circuits; integrated circuits; electronic components; resistance wires; electrodes; magnetic cores.

22.

KOA SMART OPTION

      
Serial Number 79405194
Status Pending
Filing Date 2024-08-08
Owner KOA CORPORATION (Japan)
NICE Classes  ? 09 - Scientific and electric apparatus and instruments

Goods & Services

Temperature sensors; inclinometers; pressure sensors; pressure gauges; manometers; gas sensors; anemometers; flowmeters; sensors (measurement apparatus), other than for medical use; detectors; measuring devices, electric; electric current control devices; rotary converters; phase modifiers; electric resistances; fuses; electronic inductors; electrical inductors; electrical cells and batteries; ammeters; voltmeters; electric conductors; electric resistors for telecommunication apparatus; electric coils; fuses for telecommunication apparatus; telecommunication machines and apparatus; LED monitors; thermistors; electronic circuits; integrated circuits; electronic components; resistance wires; electrodes; magnetic cores.

23.

CURRENT DETECTION CIRCUIT

      
Application Number 18429141
Status Pending
Filing Date 2024-01-31
First Publication Date 2024-08-01
Owner
  • National University Corporation Tokai National Higher Education and Research System (Japan)
  • KOA CORPORATION (Japan)
Inventor
  • Yonezawa, Yu
  • Yamamoto, Masayoshi
  • Hasenuma, Atsushi
  • Shigesawa, Koji
  • Nakamura, Keishi
  • Toyoda, Susumu

Abstract

A current detection circuit, including: an output circuit to output a signal indicating a voltage drop between a pair of detection terminals; an amplifier circuit to amplify the signal from the output circuit; an AD conversion circuit to generate a digital signal by sampling, at a predetermined cycle, an amplified signal amplified by the amplifier circuit; a filter circuit configured to extract, from the amplified signal amplified by the amplifier circuit, a noise component having a frequency higher than a sampling frequency of the AD conversion circuit; a comparing unit to output a comparison signal indicating a noise detection timing at which an output signal of the filter circuit exceeds a predetermined reference value for detecting the noise component; and an arithmetic circuit to delay a timing at which the amplified signal is sampled by the AD conversion circuit for a predetermined time based on the comparison signal.

IPC Classes  ?

  • H02M 1/00 - Details of apparatus for conversion
  • H02M 7/5387 - Conversion of DC power input into AC power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only, e.g. single switched pulse inverters in a bridge configuration
  • H03F 3/45 - Differential amplifiers

24.

CURRENT DETECTION DEVICE

      
Application Number 18559922
Status Pending
Filing Date 2022-04-22
First Publication Date 2024-07-25
Owner KOA CORPORATION (Japan)
Inventor Osawa, Ryou

Abstract

The present invention relates to a current detection device, in particular a current detection device using a shunt resistor. The current detection device (30) includes a resistive element (5) and a pair of electrodes (6, 7). The electrodes (6, 7) have detection areas (24a, 25a) demarcated by first slits (16, 17), second slits (26, 27), and contact surfaces (6a, 7a) that at least partially contacts the resistive element (5). The electrodes (6, 7) further have voltage detection portions (20, 21) arranged in the detection areas (24a, 25a).

IPC Classes  ?

  • G01R 1/20 - Modifications of basic electric elements for use in electric measuring instrumentsStructural combinations of such elements with such instruments
  • G01R 19/00 - Arrangements for measuring currents or voltages or for indicating presence or sign thereof

25.

SENSOR ELEMENT

      
Application Number 18290501
Status Pending
Filing Date 2022-05-10
First Publication Date 2024-07-25
Owner KOA CORPORATION (Japan)
Inventor
  • Kanegae, Satoshi
  • Miura, Katsuya
  • Nagasaka, Isao

Abstract

Provided is a sensor element capable of obtaining a wide sensing region, suppressing unevenness of a temperature distribution in the sensing region, and obtaining substantially constant sensor sensitivity. A sensor element according to the present invention includes: a base; a temperature-sensitive film formed on an entire surface of the base and having an electric resistance value that changes due to a change in temperature; and wiring members connected to both ends of the temperature-sensitive film. The temperature-sensitive film includes connection regions connected to the wiring members and a pattern extending from each of the connection regions toward a center of the base, and a cross-sectional area of the pattern is smaller on the connection region sides than at the center of the base.

IPC Classes  ?

26.

RESISTIVE OXYGEN GAS SENSOR AND OXYGEN SENSOR DEVICE

      
Application Number 18579171
Status Pending
Filing Date 2022-06-16
First Publication Date 2024-06-27
Owner
  • Nagaoka University of Technology (Japan)
  • KOA Corporation (Japan)
Inventor
  • Okamoto, Tomoichiro
  • Iguchi, Kenichi
  • Ota, Yukiko
  • Komatsu, Ryosuke
  • Ko, Zoku
  • Tanaka, Tetsuro

Abstract

In a resistive oxygen gas sensor, an oxygen gas detection member for detecting oxygen gas contains, as a main component, a semiconductor material having a composition formula represented by RE(Ba2-x, REx)Cu3O, (wherein, RE is a rare earth element, x is 0≤x≤ 1.2, and y is 6.0≤y≤7.5).

IPC Classes  ?

  • G01N 27/12 - Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating resistance of a solid body in dependence upon absorption of a fluidInvestigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating resistance of a solid body in dependence upon reaction with a fluid

27.

COPPER ALLOY MATERIAL AND SHUNT RESISTOR

      
Application Number 18529604
Status Pending
Filing Date 2023-12-05
First Publication Date 2024-06-20
Owner KOA CORPORATION (Japan)
Inventor
  • Kumeda, Yoshitaka
  • Yoshioka, Tadahiko

Abstract

A copper alloy material having a low volume resistivity, a low TCR and a small thermal electromotive force with respect to copper and a shunt resistor comprising a resistive body formed by the copper alloy material are provided. The copper-manganese-based copper alloy material includes 4.5-5.5 mass % of manganese, 0.1-0.3 mass % of iron, 0.1-0.5 mass % of tin, and a balance being copper. A volume resistivity is 15-25 μΩ·cm. An absolute value of TCR is 150×10−6/K or less. A thermal electromotive force with respect to copper is 1 μV/K or less. A resistance value change is −0.3% to 0% in a heat resistance test of 175° C. for 3000 hours.

IPC Classes  ?

  • C22C 9/05 - Alloys based on copper with manganese as the next major constituent
  • G01R 1/20 - Modifications of basic electric elements for use in electric measuring instrumentsStructural combinations of such elements with such instruments

28.

RESISTOR AND MANUFACTURING METHOD OF RESISTOR

      
Application Number 18552178
Status Pending
Filing Date 2022-03-16
First Publication Date 2024-05-30
Owner KOA Corporation (Japan)
Inventor
  • Kaneko, Reina
  • Noguchi, Tomofumi
  • Sakai, Yoichi
  • Yamamoto, Junpei
  • Iguchi, Tomoki

Abstract

Provided is a resistor provided with a resistance body and electrodes provided on the resistance body, and the resistance body has an oxide film on a surface.

IPC Classes  ?

  • H01C 1/032 - HousingEnclosingEmbeddingFilling the housing or enclosure plural layers surrounding the resistive element
  • H01C 17/02 - Apparatus or processes specially adapted for manufacturing resistors adapted for manufacturing resistors with envelope or housing
  • H01C 17/26 - Apparatus or processes specially adapted for manufacturing resistors adapted for trimming by converting resistive material

29.

SHUNT RESISTOR

      
Application Number JP2023036174
Publication Number 2024/111254
Status In Force
Filing Date 2023-10-04
Publication Date 2024-05-30
Owner KOA CORPORATION (Japan)
Inventor
  • Matsubara, Shuhei
  • Toyoda, Susumu
  • Hirasawa, Koichi
  • Nakamura, Keishi

Abstract

The present invention relates to a shunt resistor. This shunt resistor (1) comprises at least two elements (150) that are attached to an electrode member (10). The at least two elements (150) are provided with resistors (5) that have different specific resistances.

IPC Classes  ?

  • H01C 13/02 - Structural combinations of resistors
  • H01C 7/00 - Non-adjustable resistors formed as one or more layers or coatingsNon-adjustable resistors made from powdered conducting material or powdered semi-conducting material with or without insulating material
  • H01C 13/00 - Resistors not provided for elsewhere

30.

Chip component production method

      
Application Number 17769311
Grant Number 12125618
Status In Force
Filing Date 2020-09-24
First Publication Date 2024-05-09
Grant Date 2024-10-22
Owner KOA CORPORATION (Japan)
Inventor
  • Akahane, Yasushi
  • Tamada, Nobuhiko

Abstract

A chip component 10 comprises: an insulating substrate 1 on which a resistor 3 serving as a functional element is formed; a pair of internal electrodes (front electrodes 2, end surface electrodes 6, and back electrodes 5) that is formed to cover both end portions of the insulating substrate 1 and connected to the resistor 3; a barrier layer 8 that is formed on a surface of each of the internal electrodes and mainly composed of nickel; and an external connection layer 9 that is formed on a surface of the barrier layer 8 and mainly composed of tin, and the barrier layer 8 is composed of alloy plating (Ni—P) including nickel and phosphorus, which is formed by electrolytic plating, and a content rate of phosphorus in the alloy plating of an inner region is made different from that of an outer region so that at least the inner region of the barrier layer 8 has magnetic properties.

IPC Classes  ?

  • H01C 17/00 - Apparatus or processes specially adapted for manufacturing resistors
  • C25D 3/56 - ElectroplatingBaths therefor from solutions of alloys
  • C25D 5/12 - Electroplating with more than one layer of the same or of different metals at least one layer being of nickel or chromium
  • C25D 7/06 - WiresStripsFoils
  • C25D 21/12 - Process control or regulation
  • H01C 1/032 - HousingEnclosingEmbeddingFilling the housing or enclosure plural layers surrounding the resistive element
  • H01C 1/142 - Terminals or tapping points specially adapted for resistorsArrangements of terminals or tapping points on resistors the terminals or tapping points being coated on the resistive element
  • H01C 17/242 - Apparatus or processes specially adapted for manufacturing resistors adapted for trimming by removing or adding resistive material by laser

31.

SHUNT RESISTOR AND SHUNT RESISTOR MANUFACTURING METHOD

      
Application Number JP2023026520
Publication Number 2024/084761
Status In Force
Filing Date 2023-07-20
Publication Date 2024-04-25
Owner KOA CORPORATION (Japan)
Inventor Osawa, Ryo

Abstract

The present invention relates to a shunt resistor and a shunt resistor manufacturing method. A shunt resistor (1) comprises a pair of electrodes (6, 7) connected to both ends of a resistor element (5). The pair of electrodes (6, 7) has a pair of voltage detection units (20, 21), and a hole (70) is provided in the resistor element (5) between the pair of voltage detection units (20, 21).

IPC Classes  ?

  • H01C 13/00 - Resistors not provided for elsewhere
  • H01C 1/144 - Terminals or tapping points specially adapted for resistorsArrangements of terminals or tapping points on resistors the terminals or tapping points being welded or soldered
  • H01C 17/232 - Adjusting the temperature coefficientAdjusting value of resistance by adjusting temperature coefficient
  • H01C 17/28 - Apparatus or processes specially adapted for manufacturing resistors adapted for applying terminals

32.

TEMPERATURE SENSOR AND CURRENT DETECTION DEVICE

      
Application Number JP2023027032
Publication Number 2024/084763
Status In Force
Filing Date 2023-07-24
Publication Date 2024-04-25
Owner KOA CORPORATION (Japan)
Inventor
  • Toyoda Susumu
  • Nakamura Keishi
  • Akahane Yasushi

Abstract

The present invention provides: a temperature sensor which enables further simplification of a step for connecting a terminal; and a current detection device. This temperature sensor for measuring the temperature of a shunt resistor is provided with: a resin film which has a first surface and a second surface; a first conductive pattern which is provided on the first surface side of the resin film and serves as a temperature sensing part; and a pair of second conductive patterns which are provided on the first surface side or the second surface side of the resin film for the purpose of detecting the voltage of the shunt resistor.

IPC Classes  ?

  • G01K 7/16 - Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat using resistive elements
  • G01K 1/14 - SupportsFastening devicesArrangements for mounting thermometers in particular locations
  • G01R 15/00 - Details of measuring arrangements of the types provided for in groups , or
  • G01R 19/00 - Arrangements for measuring currents or voltages or for indicating presence or sign thereof
  • G01R 19/32 - Compensating for temperature change

33.

ELECTRONIC COMPONENT

      
Application Number JP2023030045
Publication Number 2024/070331
Status In Force
Filing Date 2023-08-21
Publication Date 2024-04-04
Owner KOA CORPORATION (Japan)
Inventor
  • Miyashita Kyohei
  • Aoki Hirotoshi
  • Yamashita Yoshifumi

Abstract

A resistor 10, which is an electronic component that provides suppression of thermal effects on a circuit board, has a structure in which an exterior member 5 encloses, inter alia: a resistor body 7 formed in a central area 6 of a first surface of an insulating substrate 2 and internal electrodes 8a to 8d that are formed in opposing edge areas 9a, 9b that sandwich the central area 6, wherein, at an upper surface portion of the exterior member 5, a second surface of the insulating substrate 2 is close-contactably exposed to an outer metal member 14. In addition, within a lower surface portion of the exterior member 5, protrusions 5a, 5b, which distance the resistor 10 from a circuit substrate 12, are formed at locations that contain a lead-out section of a lead terminal 3a to 3d and a corresponding region in the thickness direction of the exterior member.

IPC Classes  ?

  • H01C 1/084 - Cooling, heating or ventilating arrangements using self-cooling, e.g. fins, heat sinks
  • H01C 1/028 - HousingEnclosingEmbeddingFilling the housing or enclosure the resistive element being embedded in insulation with outer enclosing sheath
  • H01C 1/034 - HousingEnclosingEmbeddingFilling the housing or enclosure the housing or enclosure being formed as coating or mould without outer sheath

34.

RESISTOR

      
Application Number JP2023020463
Publication Number 2024/062687
Status In Force
Filing Date 2023-06-01
Publication Date 2024-03-28
Owner KOA CORPORATION (Japan)
Inventor Tonouchi, Isao

Abstract

The present invention relates to a resistor, particularly to a surface-mount resistor. A resistor (1) comprises protrusions (10, 10) that are formed on side surfaces (3c, 3c) of a pair of cap-like electrodes (3, 3).

IPC Classes  ?

  • H01C 1/148 - Terminals or tapping points specially adapted for resistorsArrangements of terminals or tapping points on resistors the terminals embracing or surrounding the resistive element
  • H01C 7/00 - Non-adjustable resistors formed as one or more layers or coatingsNon-adjustable resistors made from powdered conducting material or powdered semi-conducting material with or without insulating material

35.

ELECTRONIC COMPONENT

      
Application Number 18371150
Status Pending
Filing Date 2023-09-21
First Publication Date 2024-03-28
Owner KOA CORPORATION (Japan)
Inventor
  • Kubota, Hirofumi
  • Oguchi, Tomonori

Abstract

An electronic component according to an embodiment of the present invention includes: a chip; a die pad to which the chip is secured; a suspension terminal extending from the die pad; a lead terminal electrically connected to the chip; and a dummy terminal, in which the suspension terminal is disposed closer to the dummy terminal than the lead terminal.

IPC Classes  ?

36.

MOUNTING STRUCTURE FOR CHIP COMPONENT

      
Application Number 18276215
Status Pending
Filing Date 2022-02-24
First Publication Date 2024-03-21
Owner KOA CORPORATION (Japan)
Inventor Akahane, Yasushi

Abstract

Provided is a mounting structure for a chip component having high thermal shock resistance. In amounting structure for a chip resistor 1 according to the present invention, a separation distance L1 between a pair of back surface electrodes 3 formed on an insulating substrate 2 of a chip resistor 20 is set to be shorter than a separation distance L2 between a pair of lands 31 provided on a circuit board 30. Each of the back surface electrodes 3 is formed with a thick portion (first electrode portion 3a), and an external electrode 9 deposited on the back surface electrode 3 is connected on the corresponding land 31 via solder 32 with a top portion of the thick portion made positioned directly above an inner end of the land 31.

IPC Classes  ?

  • H01C 1/142 - Terminals or tapping points specially adapted for resistorsArrangements of terminals or tapping points on resistors the terminals or tapping points being coated on the resistive element
  • H01C 7/00 - Non-adjustable resistors formed as one or more layers or coatingsNon-adjustable resistors made from powdered conducting material or powdered semi-conducting material with or without insulating material
  • H01L 23/13 - Mountings, e.g. non-detachable insulating substrates characterised by the shape

37.

SENSOR DEVICE

      
Application Number 18272660
Status Pending
Filing Date 2022-01-20
First Publication Date 2024-03-07
Owner KOA CORPORATION (Japan)
Inventor
  • Katase, Yasuyuki
  • Yasue, Toshiya

Abstract

An object is to provide a sensor device capable of highly accurately detecting a flow rate at 360 degrees in a radial direction with respect to a first sensor element including a resistive element for flow rate detection. A sensor device according to the present invention includes a substrate, a first sensor element including a resistive element for flow rate detection, and a second sensor element including a resistive element for temperature compensation. Each of the first sensor element and the second sensor element is supported to be separated from a surface of the substrate via a pair of lead wires, and the first sensor element is disposed at a higher position than the second sensor element.

IPC Classes  ?

  • G01F 1/69 - Structural arrangementsMounting of elements, e.g. in relation to fluid flow using a particular type of heating, cooling or sensing element of resistive type
  • G01F 1/696 - Circuits therefor, e.g. constant-current flow meters

38.

ALL-SOLID-STATE POTASSIUM ION SELECTIVE ELECTRODE, AND METHOD FOR PRODUCING SAME

      
Application Number JP2023024062
Publication Number 2024/042854
Status In Force
Filing Date 2023-06-28
Publication Date 2024-02-29
Owner
  • KOA CORPORATION (Japan)
  • TOKYO UNIVERSITY OF SCIENCE FOUNDATION (Japan)
Inventor
  • Takayama Toshiharu
  • Matsui Takahiro
  • Takei Yuko
  • Aoki Kazuma
  • Komaba Shinichi
  • Tatara Ryoichi
  • Ishihara Kenta

Abstract

x6y22O, at least a portion of the Prussian blue analog particles has a monoclinic crystal structure, x is a number of 1.5-2, y is a number greater than 0 and less than or equal to 1, and n is a number greater than or equal to 0.

IPC Classes  ?

39.

ALL-SOLID-STATE POTASSIUM ION SELECTIVE ELECTRODE

      
Application Number JP2023024063
Publication Number 2024/042855
Status In Force
Filing Date 2023-06-28
Publication Date 2024-02-29
Owner
  • KOA CORPORATION (Japan)
  • TOKYO UNIVERSITY OF SCIENCE FOUNDATION (Japan)
Inventor
  • Takayama Toshiharu
  • Matsui Takahiro
  • Takei Yuko
  • Aoki Kazuma
  • Komaba Shinichi
  • Tatara Ryoichi
  • Ishihara Kenta

Abstract

xxFeFe, wherein x represents a number that is more than 0 but not more than 2.

IPC Classes  ?

40.

Essential Parts of the World

      
Application Number 018988808
Status Registered
Filing Date 2024-02-21
Registration Date 2024-06-29
Owner KOA CORPORATION (Japan)
NICE Classes  ? 09 - Scientific and electric apparatus and instruments

Goods & Services

Temperature sensors; inclinometers; pressure sensors; pressure gauges; manometers; gas sensors; anemometers; flowmeters; sensors [measurement apparatus], other than for medical use; detectors; measuring devices, electric; electric current control devices; power distribution or control machines and apparatus; rotary converters; phase modifiers; electric resistances; fuses; electronic inductors; electrical inductors; electrical cells and batteries; ammeters; electric current sensors; voltmeters; electric or magnetic meters and testers; electric conductors; electric resistors for telecommunication apparatus; electric coils; fuses for telecommunication apparatus; parts and accessories for telecommunication machines and apparatus; telecommunication machines and apparatus; LED monitors; thermistors; semi-conductor elements; electronic circuits; integrated circuits; electronic components; resistance wires; electrodes; magnetic cores.

41.

ESSENTIAL PARTS OF THE WORLD

      
Serial Number 98406545
Status Pending
Filing Date 2024-02-15
Owner KOA CORPORATION (Japan)
NICE Classes  ? 09 - Scientific and electric apparatus and instruments

Goods & Services

Temperature sensors; inclinometers; pressure sensors; pressure gauges; manometers being pressure gauges; gas sensors for measuring gas concentration; anemometers; flowmeters; electronic devices for measuring electric current; electric current control devices; electric power distribution machines; rotary converters; phase modifiers; electric resistances; electrical fuses; electronic inductors; electrical inductors; electrical cells and batteries; ammeters; sensors for detecting electric current; voltmeters; electric meters; electric conductors; electric resistors for telecommunication apparatus; electric coils; electrical fuses for telecommunication apparatus; electric resistors for telecommunication apparatus; LED monitors; thermistors; semiconductor power elements; electronic circuits; integrated circuits; electronic components for computers; resistance wires; electrodes; magnetic cores

42.

CHIP COMPONENT

      
Application Number 18266722
Status Pending
Filing Date 2021-12-02
First Publication Date 2024-02-08
Owner KOA CORPORATION (Japan)
Inventor Akahane, Yasushi

Abstract

A chip resistor according to the present invention includes an insulating substrate, a pair of back surface electrodes, a pair of top surface electrodes, a resistor, and a pair of end face electrodes. The back surface electrode includes the first electrode portion located inwardly and away from the end face of the insulating substrate, and the two second electrode portions arranged on two portions, respectively, in the short direction of the insulating substrate with the cutout portion, which is positioned between the end face of the insulating substrate and the first electrode portion, being interposed therebetween, and the maximum height of the first electrode portion is set to be more than the maximum height of the second electrode portions.

IPC Classes  ?

  • H05K 3/34 - Assembling printed circuits with electric components, e.g. with resistor electrically connecting electric components or wires to printed circuits by soldering
  • H01C 7/00 - Non-adjustable resistors formed as one or more layers or coatingsNon-adjustable resistors made from powdered conducting material or powdered semi-conducting material with or without insulating material
  • H01C 1/142 - Terminals or tapping points specially adapted for resistorsArrangements of terminals or tapping points on resistors the terminals or tapping points being coated on the resistive element
  • H01C 17/28 - Apparatus or processes specially adapted for manufacturing resistors adapted for applying terminals
  • H01C 17/00 - Apparatus or processes specially adapted for manufacturing resistors

43.

Varistor

      
Application Number 29786917
Grant Number D1013636
Status In Force
Filing Date 2021-06-03
First Publication Date 2024-02-06
Grant Date 2024-02-06
Owner KOA Corporation (Japan)
Inventor Tonouchi, Isao

44.

SENSOR DEVICE

      
Application Number 18215961
Status Pending
Filing Date 2023-06-29
First Publication Date 2024-01-11
Owner KOA CORPORATION (Japan)
Inventor
  • Katase, Yasuyuki
  • Yazawa, Miki

Abstract

A sensor device according to the present invention includes a substrate including a heat generation portion, a casing including an accommodation portion accommodating the substrate, and a sensor element including a temperature-sensitive resistor and being supported by the substrate, in which the accommodation portion is divided into a plurality of accommodation spaces on a side closer to the sensor element. The accommodation portion is divided into a first accommodation space and a second accommodation space via division plates, and the first accommodation space is formed on a side closer to the sensor element than the second accommodation space, and widely as compared with the second accommodation space.

IPC Classes  ?

  • G01F 1/692 - Thin-film arrangements
  • G01F 1/698 - Feedback or rebalancing circuits, e.g. self heated constant temperature flowmeters
  • G01F 15/14 - Casings, e.g. of special material

45.

SHUNT RESISTOR AND SHUNT RESISTANCE DEVICE

      
Application Number 18031652
Status Pending
Filing Date 2021-07-14
First Publication Date 2023-11-30
Owner KOA CORPORATION (Japan)
Inventor
  • Hirasawa, Koichi
  • Toyoda, Susumu
  • Nakamura, Keishi

Abstract

The present invention relates a shunt resistor and a shunt resistance device. The shunt resistor (1) includes an electrode member (10). The electrode member (10) includes a contact portion (10a) contacting a resistance element (5), and a slit (20) formed on the contact portion (10a).

IPC Classes  ?

  • H01C 1/144 - Terminals or tapping points specially adapted for resistorsArrangements of terminals or tapping points on resistors the terminals or tapping points being welded or soldered
  • H01C 7/00 - Non-adjustable resistors formed as one or more layers or coatingsNon-adjustable resistors made from powdered conducting material or powdered semi-conducting material with or without insulating material
  • G01R 15/14 - Adaptations providing voltage or current isolation, e.g. for high-voltage or high-current networks

46.

CHIP RESISTOR

      
Application Number JP2023004355
Publication Number 2023/218710
Status In Force
Filing Date 2023-02-09
Publication Date 2023-11-16
Owner KOA CORPORATION (Japan)
Inventor
  • Kimura Taro
  • Kawakami Keita

Abstract

The present invention provides a chip resistor which has excellent corrosion resistance. A chip resistor 1 according to the present invention is provided with: a rectangular parallelopiped insulating substrate 2; a pair of front electrodes 3 that are formed on opposite ends of the front surface of the insulating substrate 2; a pair of back electrodes 4 that are formed on opposite ends of the back surface of the insulating substrate 2; a resistor 5 that bridges the pair of front electrodes 3; a second insulating layer (protective film) 7 that is formed from a resin material and covers the resistor 5; a third insulating layer (auxiliary film) 8 that is formed from a resin material and is superposed on the second insulating layer 7; a pair of auxiliary electrode layers 9 that are formed from a resin material containing conductive particles and are superposed on the front electrodes 3; a pair of end-face electrodes 10 that extend on opposite end faces of the insulating substrate 2 and enable electrical conduction between the auxiliary electrode layers 9 and the back electrodes 4; and a pair of outer plated layers 11 that are arranged so as to cover the surfaces of the auxiliary electrode layers 9 and the end-face electrodes 10. The auxiliary electrode layers 9 are formed to positions at which end surfaces of the third insulating layer 8 are covered; and the second insulating layer 7 contains a larger amount of an inorganic filler than the third insulating layer 8.

IPC Classes  ?

  • H01C 1/032 - HousingEnclosingEmbeddingFilling the housing or enclosure plural layers surrounding the resistive element
  • H01C 1/14 - Terminals or tapping points specially adapted for resistorsArrangements of terminals or tapping points on resistors
  • H01C 7/00 - Non-adjustable resistors formed as one or more layers or coatingsNon-adjustable resistors made from powdered conducting material or powdered semi-conducting material with or without insulating material

47.

GAS SENSOR

      
Application Number 18206816
Status Pending
Filing Date 2023-06-07
First Publication Date 2023-11-02
Owner KOA CORPORATION (Japan)
Inventor
  • Tanaka, Tetsuro
  • Iguchi, Kenichi
  • Takahashi, Ken
  • Ito, Chika

Abstract

A sensor element (12) has a cross-sectional area that continuously only increases from a positive (+) electrode side toward a negative (−) electrode side, thereby leading a hot spot, which attempts to move to the negative electrode side, to a lower resistance side. A position that is at nearly equal distances from paired electrodes (13 and 15) formed on either end of the sensor element (12) is set as a hot spot generating position, so as to avoid damage to the electrodes due to heat emitted by the hot spot.

IPC Classes  ?

  • G01N 27/12 - Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating resistance of a solid body in dependence upon absorption of a fluidInvestigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating resistance of a solid body in dependence upon reaction with a fluid
  • B28B 1/30 - Producing shaped articles from the material by applying the material on to a core, or other moulding surface to form a layer thereon
  • B28B 1/48 - Producing shaped articles from the material by removing material from solid section preforms for forming hollow articles, e.g. by punching or boring
  • G01N 33/00 - Investigating or analysing materials by specific methods not covered by groups

48.

HETEROJUNCTION PHOTOCATALYST, PHOTOCATALYST COMPOSITE, METHOD FOR PRODUCING HETEROJUNCTION PHOTOCATALYST, AND METHOD FOR PRODUCING HYDROGEN

      
Application Number 18023749
Status Pending
Filing Date 2021-08-27
First Publication Date 2023-10-26
Owner KOA CORPORATION (Japan)
Inventor
  • Miyasato, Ryo
  • Tojo, Takuto

Abstract

The present invention provides a heterojunction photocatalyst having higher photocatalytic activity than that of a conventional heterojunction photocatalyst. Further, the present invention provides a photocatalyst composite having the heterojunction photocatalyst on a substrate, a method for producing the heterojunction photocatalyst, and a method for producing hydrogen using the heterojunction photocatalyst or the photocatalyst composite The het junction photocatalyst of the present invention has a solid mediator between a hydrogen-evolution photocatalyst and an oxygen-evolution photocatalyst, and the solid mediator is selectively joined to an electrons collecting surface of the oxygen-evolution photocatalyst.

IPC Classes  ?

  • B01J 35/00 - Catalysts, in general, characterised by their form or physical properties
  • B01J 21/06 - Silicon, titanium, zirconium or hafniumOxides or hydroxides thereof
  • B01J 23/68 - Silver or gold with arsenic, antimony, bismuth, vanadium, niobium, tantalum, polonium, chromium, molybdenum, tungsten, manganese, technetium or rhenium
  • B01J 35/02 - Solids
  • B01J 37/03 - PrecipitationCo-precipitation
  • B01J 37/34 - Irradiation by, or application of, electric, magnetic or wave energy, e.g. ultrasonic waves
  • B01J 37/36 - Biochemical methods
  • C01B 3/04 - Production of hydrogen or of gaseous mixtures containing hydrogen by decomposition of inorganic compounds, e.g. ammonia
  • C01B 3/26 - Production of hydrogen or of gaseous mixtures containing hydrogen by decomposition of gaseous or liquid organic compounds of hydrocarbons using catalysts
  • B01J 23/00 - Catalysts comprising metals or metal oxides or hydroxides, not provided for in group

49.

JUMPER ELEMENT, SHUNT RESISTOR APPARATUS, AND METHOD OF ADJUSTING CHARACTERISTIC OF SHUNT RESISTOR APPARATUS FOR CURRENT DETECTION

      
Application Number 18028610
Status Pending
Filing Date 2021-08-11
First Publication Date 2023-10-19
Owner KOA CORPORATION (Japan)
Inventor
  • Hirasawa, Koichi
  • Matsubara, Shuhei
  • Nishizawa, Katsuhide
  • Nakamura, Keishi

Abstract

The present invention relates to a jumper element, a shunt resistor apparatus, and a method of adjusting characteristic of a shunt resistor apparatus for current detection. The jumper element (10) for constituting the shunt resistor apparatus for current detection is made of conductive metal material. The jumper element (10) includes: a body structure (11) that can be coupled to a resistance element (5) constituting a part of the shunt resistor apparatus; and a protrusion (12) formed on a side portion of the body structure (11), wherein the protrusion (12) is located so as not to overlap the resistor element (5).

IPC Classes  ?

  • G01R 1/20 - Modifications of basic electric elements for use in electric measuring instrumentsStructural combinations of such elements with such instruments
  • G01R 15/14 - Adaptations providing voltage or current isolation, e.g. for high-voltage or high-current networks

50.

CHIP RESISTOR AND METHOD OF PRODUCING THEREOF

      
Application Number 18126517
Status Pending
Filing Date 2023-03-27
First Publication Date 2023-10-19
Owner KOA CORPORATION (Japan)
Inventor Kimura, Taro

Abstract

A chip resistor 10 comprises: a insulating substrate 1; a pair of upper surface electrodes 2; a resistor 3; a pair of lower surface electrodes 5; a pair of resin electrode layers 6 made of synthetic resin materials containing conductive particles and laminated on the pair of lower surface electrodes 5; a pair of end face electrodes 7; and a pair of external electrodes 8, wherein the pair of the lower surface electrodes 5 is made of metal thin film layers formed as thin films on a mounting surface of the insulating substrate 1, respectively, and includes exposed portions 5a exposed from the resin electrode layers 6, respectively, and the pair of external electrodes 8 is in contact with the exposed portions 5a of the lower surface electrodes 5 and entire surfaces of the resin electrode layers 6, respectively. [Selected drawing] FIG. 1

IPC Classes  ?

  • H01C 1/142 - Terminals or tapping points specially adapted for resistorsArrangements of terminals or tapping points on resistors the terminals or tapping points being coated on the resistive element

51.

SHUNT RESISTOR AND SHUNT RESISTANCE DEVICE

      
Application Number JP2023006418
Publication Number 2023/199611
Status In Force
Filing Date 2023-02-22
Publication Date 2023-10-19
Owner KOA CORPORATION (Japan)
Inventor
  • Matsubara, Shuhei
  • Toyoda, Susumu
  • Hirasawa, Koichi
  • Nakamura, Keishi

Abstract

The present invention pertains to a shunt resistor and a shunt resistance device. A shunt resistor (1) comprises at least two stacked elements (50) which are each attached to an electrode member (10) and have a resistor (5). The electrode member (10) has at least two contact parts (10a) that come in contact with the at least two stacked elements (50).

IPC Classes  ?

  • H01C 13/00 - Resistors not provided for elsewhere
  • G01R 15/00 - Details of measuring arrangements of the types provided for in groups , or
  • H01C 1/142 - Terminals or tapping points specially adapted for resistorsArrangements of terminals or tapping points on resistors the terminals or tapping points being coated on the resistive element

52.

RESISTANCE ALLOY FOR USE IN SHUNT RESISTOR, USE OF RESISTANCE ALLOY IN SHUNT RESISTOR, AND SHUNT RESISTOR USING RESISTANCE ALLOY

      
Application Number 18022926
Status Pending
Filing Date 2021-07-16
First Publication Date 2023-10-12
Owner KOA CORPORATION (Japan)
Inventor
  • Kumeda, Yoshitaka
  • Yoshioka, Tadahiko

Abstract

Provided is a current detection resistor, such as a shunt resistor, wherein a. low specific resistance and a small thermal electromotive force with respect to copper are achieved, while maintaining a low TCR. A resistance alloy for use in a current detection shunt resistor includes 4.5 to 5.5 mass % of manganese, 0.05 to 0.30 mass % of silicon, 0.10 to 0.30 mass % of iron, and a balance being copper, and has a specific resistance of 15 to 25 μΩ·m.

IPC Classes  ?

  • H01C 1/00 - RESISTORS Details
  • H01C 7/13 - Non-adjustable resistors formed as one or more layers or coatingsNon-adjustable resistors made from powdered conducting material or powdered semi-conducting material with or without insulating material current-responsive
  • C22C 9/05 - Alloys based on copper with manganese as the next major constituent
  • C22F 1/08 - Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of copper or alloys based thereon
  • C22F 1/02 - Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working in inert or controlled atmosphere or vacuum

53.

SHUNT RESISTOR AND CURRENT DETECTION DEVICE

      
Application Number JP2023010638
Publication Number 2023/189742
Status In Force
Filing Date 2023-03-17
Publication Date 2023-10-05
Owner KOA CORPORATION (Japan)
Inventor Endo, Tamotsu

Abstract

The present invention relates to a shunt resistor and a current detection device. A current detection unit (2) includes voltage detection terminals (8A, 8B) provided at first characteristic positions on electrodes (6, 7) where the temperature coefficient of resistance of a shunt resistor (1) is a first coefficient, and voltage detection terminals (8C, 8D) provided at second characteristic positions on the electrodes (6, 7) where the temperature coefficient of resistance of the shunt resistor (1) is a second coefficient. The first coefficient and the second coefficient are different numerical values.

IPC Classes  ?

  • G01R 15/00 - Details of measuring arrangements of the types provided for in groups , or
  • H01C 1/14 - Terminals or tapping points specially adapted for resistorsArrangements of terminals or tapping points on resistors
  • H01C 13/00 - Resistors not provided for elsewhere

54.

LOAD SENSOR ELEMENT

      
Application Number JP2023004495
Publication Number 2023/181688
Status In Force
Filing Date 2023-02-10
Publication Date 2023-09-28
Owner KOA CORPORATION (Japan)
Inventor
  • Karasawa, Atsushi
  • Aoki, Natsumi
  • Tsuno, Masaya
  • Kojima, Hirofumi

Abstract

This load sensor element comprises: a substrate; an inorganic layer which is a first layer that is provided on a surface, which is one surface of the substrate, and that covers a section of the substrate; and a thin film resistor that is provided on the surface. The thin film resistor includes: a body section that is sandwiched between the substrate and the inorganic layer; and a first end section and a second end section that are mounted at an exposed section of the substrate that is not covered by the inorganic layer. The load sensor element also comprises a reinforcing layer which is a second layer that is provided on an underside surface, which is the other surface of the substrate, so as to sandwich the substrate together with the inorganic layer. In the load sensor element, the inorganic layer and the reinforcing layer are disposed so that one edge of the inorganic layer which contacts the surface and one edge of the reinforcing layer which contacts the underside surface are aligned in the thickness direction of the substrate.

IPC Classes  ?

  • G01L 1/22 - Measuring force or stress, in general by measuring variations in ohmic resistance of solid materials or of electrically-conductive fluidsMeasuring force or stress, in general by making use of electrokinetic cells, i.e. liquid-containing cells wherein an electrical potential is produced or varied upon the application of stress using resistance strain gauges
  • G01L 1/26 - Auxiliary measures taken, or devices used, in connection with the measurement of force, e.g. for preventing influence of transverse components of force, for preventing overload

55.

LOAD SENSOR ELEMENT

      
Application Number JP2023004492
Publication Number 2023/181687
Status In Force
Filing Date 2023-02-10
Publication Date 2023-09-28
Owner KOA CORPORATION (Japan)
Inventor
  • Karasawa, Atsushi
  • Aoki, Natsumi
  • Tsuno, Masaya

Abstract

This load sensor element comprises a substrate, and an inorganic layer which has an accepting surface for accepting a load and which is provided so as to cover a portion of a top surface, which is one surface of the substrate. The load sensor element is provided with a thin-film resistor configured from a resistor having a resistance value that varies in accordance with the load accepted by the inorganic layer. The thin-film resistor includes a main body portion sandwiched between the substrate and the inorganic layer, and one end portion and an other end portion, which are two end portions placed on exposed portions of the substrate that are not covered by the inorganic layer. The load sensor element is provided with a first temperature compensation resistor which is independent of the thin-film resistor and which is disposed on an exposed portion 28 of the top surface, which is said one surface of the substrate. The load sensor element is provided with a second temperature compensation resistor which is disposed on a rear surface, being another surface of the substrate, and which exhibits the same behavior as the first temperature compensation resistor.

IPC Classes  ?

  • G01L 1/22 - Measuring force or stress, in general by measuring variations in ohmic resistance of solid materials or of electrically-conductive fluidsMeasuring force or stress, in general by making use of electrokinetic cells, i.e. liquid-containing cells wherein an electrical potential is produced or varied upon the application of stress using resistance strain gauges
  • G01L 1/26 - Auxiliary measures taken, or devices used, in connection with the measurement of force, e.g. for preventing influence of transverse components of force, for preventing overload

56.

FLOW SENSOR ELEMENT

      
Application Number 18013705
Status Pending
Filing Date 2021-06-16
First Publication Date 2023-09-21
Owner KOA CORPORATION (Japan)
Inventor
  • Shimodaira, Masahiro
  • Miura, Katsuya

Abstract

An object is to provide a flow sensor element is non-directional and has an excellent sensor sensitivity. A flow sensor element includes a base body having a spherical shape, and a temperature-sensitive film pattern that is disposed over the entirety of a surface of the base body, and changes in an electrical resistance value due to a change in temperature. It is preferable that the temperature-sensitive film pattern be formed by trimming a temperature-sensitive film that has been formed on the surface of the base body. In the flow sensor element, the temperature-sensitive film pattern can be disposed over the entirety of the surface of the base body having a spherical shape. This enables a constant sensor sensitivity to be obtained regardless of a direction of a fluid, and the accuracy of detection of a flow rate can be improved.

IPC Classes  ?

57.

RESISTANCE ALLOY FOR USE IN SHUNT RESISTOR, USE OF RESISTANCE ALLOY IN SHUNT RESISTOR, AND SHUNT RESISTOR USING RESISTANCE ALLOY

      
Application Number 18019755
Status Pending
Filing Date 2021-05-20
First Publication Date 2023-09-14
Owner KOA CORPORATION (Japan)
Inventor
  • Kanauchi, Naoki
  • Kumeda, Yoshitaka
  • Yoshioka, Tadahiko

Abstract

Provided is a resistance alloy enabling a decrease in the TCR of a shunt resistor for use in a current detection device capable of detecting large currents. A copper-manganese based resistance alloy for use in a shunt resistor further comprises tin and nickel and has a TCR less than or equal to −36×10−6/K at 100° C. with reference to 25° C.

IPC Classes  ?

  • C22C 9/05 - Alloys based on copper with manganese as the next major constituent
  • H01C 7/00 - Non-adjustable resistors formed as one or more layers or coatingsNon-adjustable resistors made from powdered conducting material or powdered semi-conducting material with or without insulating material

58.

CHIP RESISTOR

      
Application Number JP2022040638
Publication Number 2023/149034
Status In Force
Filing Date 2022-10-31
Publication Date 2023-08-10
Owner KOA CORPORATION (Japan)
Inventor Kimura Taro

Abstract

Provided is a chip resistor that is capable of ensuring low TCR while increasing electric power even with low resistance. This chip resistor 1 comprises an insulation substrate 2, a pair of obverse electrodes 3 provided to the two obverse-surface end parts of the insulation substrate 2, a resistor body 5 connecting the two obverse electrodes 3, a glass body 6 provided on the resistor body 5, a low-resistance-value-adjusting trimming groove 5a formed in the resistor body 5 through the glass body 6; a first protection layer 7 formed so as to cover the trimming groove 5a in a region that is further inward than the pair of obverse electrodes 3, a second protection layer 8 formed so as to cover the first protection layer 7, a pair of end-surface electrodes 9 that extend to the two end surfaces of the insulation substrate 2 and are connected to the obverse electrodes 3, and a pair of external plating layers 10 that cover the end-surface electrodes 9. The first protection layer 7 comprises a resin material containing a heat-dissipating filler, and the second protection layer 8 comprises a resin material.

IPC Classes  ?

  • H01C 7/00 - Non-adjustable resistors formed as one or more layers or coatingsNon-adjustable resistors made from powdered conducting material or powdered semi-conducting material with or without insulating material
  • H01C 1/032 - HousingEnclosingEmbeddingFilling the housing or enclosure plural layers surrounding the resistive element

59.

GAS SENSOR

      
Application Number JP2023000466
Publication Number 2023/140156
Status In Force
Filing Date 2023-01-11
Publication Date 2023-07-27
Owner
  • NATIONAL INSTITUTE OF TECHNOLOGY (Japan)
  • KOA CORPORATION (Japan)
Inventor
  • Matsushima, Shigenori
  • Obata, Kenji
  • Ota, Yukiko
  • Iguchi, Kenichi

Abstract

This gas sensor is provided with a base material, a first electrode and a second electrode both arranged on the base material, and a gas detection unit connected to the first electrode and the second electrode, in which the gas detection unit is composed of a semiconductor oxide containing calcium ferrite and zirconium as essential components and also containing at least one metal element selected from aluminum, silver and tin.

IPC Classes  ?

  • G01N 27/12 - Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating resistance of a solid body in dependence upon absorption of a fluidInvestigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating resistance of a solid body in dependence upon reaction with a fluid

60.

CURRENT DETECTING DEVICE, AND METHOD FOR MANUFACTURING SAME

      
Application Number JP2022044825
Publication Number 2023/135977
Status In Force
Filing Date 2022-12-06
Publication Date 2023-07-20
Owner KOA CORPORATION (Japan)
Inventor
  • Hara, Kazuhiro
  • Ozawa, Yutaka
  • Kitagawa, Masaki

Abstract

The present invention relates to a current detecting device and a method for manufacturing the same, and more particularly relates to a current detecting device provided with a shunt resistor, and a method for manufacturing the current detecting device. A current detecting unit (2) comprises: a plurality of pairs of voltage detection contacts (8A to 8H) electrically connected to a pair of electrodes (6, 7) of a shunt resistor (1); a plurality of pairs of voltage signal lines (9A to 9H) connected respectively to the plurality of voltage detection contacts (8A to 8H); a plurality of pairs of conductor element connection terminals (15A to 15H) connected respectively to the plurality of pairs of voltage signal lines (9A to 9H); and a pair of conductor elements (20, 21) attached to any one pair of conductor element connection terminals among the plurality of pairs of conductor element connection terminals (15A to 15H). The pair of conductor element connection terminals is selected in advance on the basis of an actual measurement result of a temperature coefficient of resistance of the shunt resistor (1).

IPC Classes  ?

  • G01R 15/00 - Details of measuring arrangements of the types provided for in groups , or
  • H01C 13/00 - Resistors not provided for elsewhere

61.

SHUNT RESISTOR AND MANUFACTURING METHOD THEREOF

      
Application Number 17925211
Status Pending
Filing Date 2021-05-06
First Publication Date 2023-06-22
Owner KOA CORPORATION (Japan)
Inventor
  • Osawa, Ryou
  • Kuroda, Takeshi

Abstract

A shunt resistor (1) includes: a resistance element (3); a first electrode (5A) and a second electrode (5B) coupled to both sides of the resistance element (3); a first fusion material (6A) and a second fusion material (6B) electrically coupled to the first electrode (5A) and the second electrode (5B), respectively, the first fusion material (5A) and the second fusion material (5B) haying electric conductivity; and at least one board (10) coupled to the first electrode (5A) and the second electrode 15B) by the first fusion material (6A) and the second fusion material (6B). The first fusion material (6A) is arranged in a first through-hole (7A) formed in the first electrode (5A) or the board (10), and the second fusion material (6B) is arranged it as second through-hole (7B) formed in the second electrode (5B) or the board (10).

IPC Classes  ?

  • G01R 1/20 - Modifications of basic electric elements for use in electric measuring instrumentsStructural combinations of such elements with such instruments
  • H01C 1/144 - Terminals or tapping points specially adapted for resistorsArrangements of terminals or tapping points on resistors the terminals or tapping points being welded or soldered
  • H01C 17/28 - Apparatus or processes specially adapted for manufacturing resistors adapted for applying terminals

62.

SHUNT RESISTOR AND CURRENT DETECTION DEVICE

      
Application Number JP2022037221
Publication Number 2023/112438
Status In Force
Filing Date 2022-10-05
Publication Date 2023-06-22
Owner KOA CORPORATION (Japan)
Inventor Kitagawa, Masaki

Abstract

The present invention relates to a shunt resistor and a current detection device. A shunt resistor (1) comprises a first protrusion (11) and a second protrusion (12). The first protrusion (11) includes a part of a resistive body (5) and a part of a pair of electrodes (6, 7). The second protrusion (12) includes a part of the resistive body (5) and a part of the pair of electrodes (6, 7).

IPC Classes  ?

  • H01C 1/144 - Terminals or tapping points specially adapted for resistorsArrangements of terminals or tapping points on resistors the terminals or tapping points being welded or soldered
  • H01C 3/00 - Non-adjustable metal resistors made of wire or ribbon, e.g. coiled, woven, or formed as grids
  • H01C 13/00 - Resistors not provided for elsewhere
  • G01R 15/00 - Details of measuring arrangements of the types provided for in groups , or

63.

SHUNT RESISTOR

      
Application Number 17924308
Status Pending
Filing Date 2021-05-06
First Publication Date 2023-06-15
Owner KOA CORPORATION (Japan)
Inventor
  • Kurihara, Toshikazu
  • Endo, Tamotsu

Abstract

Provided is a shunt resistor with an enhanced strength and reduced electrical resistance between a resistive element and terminals of the shunt resistor. This shunt resistor includes a first terminal and a second terminal each made of an electrically conductive metal material; and a resistive element disposed between the first terminal and the second terminal. The first terminal and the second terminal each have a through-hole, and the resistive element is embedded in the through-holes of the first terminal and the second terminal in a depth direction thereof. Regions connecting the resistive element to the first terminal and the second terminal each have an alloy portion formed along an inner peripheral surface of the through-hole.

IPC Classes  ?

  • H01C 7/13 - Non-adjustable resistors formed as one or more layers or coatingsNon-adjustable resistors made from powdered conducting material or powdered semi-conducting material with or without insulating material current-responsive
  • H01C 17/00 - Apparatus or processes specially adapted for manufacturing resistors
  • H01C 1/148 - Terminals or tapping points specially adapted for resistorsArrangements of terminals or tapping points on resistors the terminals embracing or surrounding the resistive element
  • H01C 1/144 - Terminals or tapping points specially adapted for resistorsArrangements of terminals or tapping points on resistors the terminals or tapping points being welded or soldered

64.

SHUNT RESISTOR AND CURRENT DETECTION APPARATUS

      
Application Number 18079245
Status Pending
Filing Date 2022-12-12
First Publication Date 2023-06-15
Owner KOA CORPORATION (Japan)
Inventor Osawa, Ryou

Abstract

A shunt resistor capable of reducing an absolute value of a temperature coefficient of resistance is disclosed. The shunt resistor includes: a base structure including a resistance element and a pair of electrodes; a bridge structure configured to bridge the pair of electrodes and made of a conductor; and connections configured to couple the pair of electrodes to the bridge structure. The bridge structure has a higher resistance than a resistance of the base structure at the connections.

IPC Classes  ?

  • H01C 1/14 - Terminals or tapping points specially adapted for resistorsArrangements of terminals or tapping points on resistors
  • G01R 19/00 - Arrangements for measuring currents or voltages or for indicating presence or sign thereof
  • G01R 1/20 - Modifications of basic electric elements for use in electric measuring instrumentsStructural combinations of such elements with such instruments
  • H01C 1/014 - MountingSupporting the resistor being suspended between, and being supported by, two supporting sections

65.

ELECTRONIC COMPONENT

      
Application Number JP2022040709
Publication Number 2023/105995
Status In Force
Filing Date 2022-10-31
Publication Date 2023-06-15
Owner KOA CORPORATION (Japan)
Inventor
  • Miyashita Kyohei
  • Uchimori Mizuki
  • Hayashi Daigo

Abstract

[Problem] To provide an electronic component capable of maintaining the creepage distance between electrode terminals. [Solution] The present invention has a structure obtained forming an upper surface section having a prescribed thickness and having a rectangular shape when seen from a plan view, a resistor element housing section which is formed in the center on the bottom surface side of the upper surface section, and a first projection 3, a second projection 4 and a third projection 5 which function as legs and project in the vertical direction from the bottom surface of the upper surface section. The present invention maintains a long creepage distance between the electrode terminals formed on projections 3 and 4 via recesses of a prescribed depth which are formed on the bottom surface side so as to extend from one side in the short direction thereof across said housing section to the other side in said short direction between the first and third projections and also between the second and third projections on the bottom surface of the upper surface section.

IPC Classes  ?

  • H01C 1/028 - HousingEnclosingEmbeddingFilling the housing or enclosure the resistive element being embedded in insulation with outer enclosing sheath
  • H01C 1/14 - Terminals or tapping points specially adapted for resistorsArrangements of terminals or tapping points on resistors
  • H01C 7/00 - Non-adjustable resistors formed as one or more layers or coatingsNon-adjustable resistors made from powdered conducting material or powdered semi-conducting material with or without insulating material

66.

RESISTIVE MATERIAL AND METHOD FOR PRODUCING SAME

      
Application Number JP2022039130
Publication Number 2023/100519
Status In Force
Filing Date 2022-10-20
Publication Date 2023-06-08
Owner KOA CORPORATION (Japan)
Inventor
  • Matsubara Shuhei
  • Kumeda Yoshitaka
  • Mizokami Toshifumi
  • Nakamura Keishi

Abstract

The present invention provides a resistive material and a method for producing the same wherein a high-temperature pressing step is not required. Provided is a method for producing a resistive material, the resistive material containing insulating powder and a three-dimensional network metal body surrounding the insulating powder, the production method comprising: a step for coating the insulating powder with a metal film to prepare metal-coated powder; a step for mixing the metal-coated powder with an electrically conductive metal powder to obtain a mixed powder; and a step for sintering the mixed powder at a temperature lower than the melting point of the metal film and the melting point of the metal powder.

IPC Classes  ?

  • H01C 17/30 - Apparatus or processes specially adapted for manufacturing resistors adapted for baking
  • H01C 7/00 - Non-adjustable resistors formed as one or more layers or coatingsNon-adjustable resistors made from powdered conducting material or powdered semi-conducting material with or without insulating material
  • H01C 13/00 - Resistors not provided for elsewhere
  • H01C 17/00 - Apparatus or processes specially adapted for manufacturing resistors

67.

SHUNT RESISTOR, METHOD FOR MANUFACTURING SHUNT RESISTOR, AND CURRENT DETECTION DEVICE

      
Application Number 17920927
Status Pending
Filing Date 2020-08-26
First Publication Date 2023-06-01
Owner KOA CORPORATION (Japan)
Inventor Kameko, Kenji

Abstract

The present invention relates to a shunt resistor and a method for manufacturing the shunt resistor. The present invention relates to a current detection device including a shunt resistor. The shunt resistor (1) comprises a resistance element (5) and a pair of electrodes (6, 7) connected to both ends (5a, 5b) of the resistance element (5) in a first direction. The shunt resistor (1) has a projecting portion (11) formed on a side surface (1a), which is parallel to the first direction, of the shunt resistor (1), and a recessed portion (12) formed in a side surface (1b), which is an opposite side of the side surface (1a), of the shunt resistor (1), and extending in the same direction as the projection (11). The projecting portion (11) has a portion of the resistance element (5) and portions of the pair of electrodes (6, 7), and the recessed portion (12) has a side surface (5d) of the resistance element (5) parallel to the first direction.

IPC Classes  ?

  • H01C 7/06 - Non-adjustable resistors formed as one or more layers or coatingsNon-adjustable resistors made from powdered conducting material or powdered semi-conducting material with or without insulating material including means to minimise changes in resistance with changes in temperature
  • G01R 15/14 - Adaptations providing voltage or current isolation, e.g. for high-voltage or high-current networks
  • H01C 1/14 - Terminals or tapping points specially adapted for resistorsArrangements of terminals or tapping points on resistors
  • H01C 17/00 - Apparatus or processes specially adapted for manufacturing resistors

68.

SHUNT RESISTOR

      
Application Number 17919107
Status Pending
Filing Date 2021-04-05
First Publication Date 2023-05-25
Owner KOA CORPORATION (Japan)
Inventor Endo, Tamotsu

Abstract

The present invention relates to a shunt resistor for current detection. The shunt resistor (1) includes: a resistance element (5) having a plate shape; and electrodes (6, 7) connected to both end surfaces (5a, 5b) of the resistance element (5), wherein the electrodes (6, 7) have cut portions (11, 12), respectively, the cut portions (11, 12) extending parallel to joint portions (8, 9) of the resistance element (5) and the electrodes (6, 7), and each of the cut portions (11, 12) is located at a position where a relationship Y≤0.80X-1.36 holds, where Y is a distance from each joint portion (6, 7) to each cut portion (11, 12), and X is a length of the joint portions (6, 7) in a width direction of the electrodes (6, 7).

IPC Classes  ?

  • H01C 1/144 - Terminals or tapping points specially adapted for resistorsArrangements of terminals or tapping points on resistors the terminals or tapping points being welded or soldered
  • H01C 13/00 - Resistors not provided for elsewhere

69.

Current detection device with voltage detecting portion positioning

      
Application Number 17919944
Grant Number 12135340
Status In Force
Filing Date 2021-04-20
First Publication Date 2023-05-18
Grant Date 2024-11-05
Owner KOA CORPORATION (Japan)
Inventor Osawa, Ryou

Abstract

c).

IPC Classes  ?

  • G01R 15/14 - Adaptations providing voltage or current isolation, e.g. for high-voltage or high-current networks
  • H01C 1/14 - Terminals or tapping points specially adapted for resistorsArrangements of terminals or tapping points on resistors
  • H01C 7/06 - Non-adjustable resistors formed as one or more layers or coatingsNon-adjustable resistors made from powdered conducting material or powdered semi-conducting material with or without insulating material including means to minimise changes in resistance with changes in temperature
  • H01C 17/00 - Apparatus or processes specially adapted for manufacturing resistors

70.

MANUFACTURING METHOD OF RESISTOR AND RESISTOR

      
Application Number 17759487
Status Pending
Filing Date 2020-12-25
First Publication Date 2023-05-11
Owner KOA Corporation (Japan)
Inventor
  • Tokiwa, Yohei
  • Eto, Kohji
  • Noguchi, Tomofumi
  • Kaneko, Reina

Abstract

A manufacturing method of a resistor contains: a step of forming a resistor base material by stacking an electrode material, a resistive material, and an electrode material in this order and by bonding the electrode material, the resistive material, and the electrode material by applying pressure in the stacked direction; a step of passing the resistor base material through a die, the die being formed with an opening portion having a dimension smaller than an outer dimension of the resistor base material; and a step of obtaining an individual resistor from the resistor base material passed through the die.

IPC Classes  ?

  • H01C 1/14 - Terminals or tapping points specially adapted for resistorsArrangements of terminals or tapping points on resistors
  • H01C 17/00 - Apparatus or processes specially adapted for manufacturing resistors

71.

ELECTRONIC COMPONENT

      
Application Number 17911824
Status Pending
Filing Date 2021-02-26
First Publication Date 2023-05-11
Owner KOA CORPORATION (Japan)
Inventor
  • Akahane, Yasushi
  • Tamada, Nobuhiko

Abstract

A chip resistor comprises an insulating substrate (component body) on which a resistor is formed, a connection terminal (front electrodes, end face electrodes, and back electrodes) formed at both end portions of the insulating substrate, an under layer formed by electrolytic plating to cover the connection terminal, a barrier layer formed by electrolytic plating to cover the under layer, and an external connection layer which is mainly composed of tin and formed on a surface of the barrier layer, wherein the barrier layer is made of alloy plating mainly composed of nickel and containing 3% to 15% of phosphorus, and the under layer is formed of a copper plated layer that is at least either more malleable or more ductile than the barrier layer.

IPC Classes  ?

72.

Current detection resistor and current detection apparatus

      
Application Number 17916641
Grant Number 12146899
Status In Force
Filing Date 2021-04-01
First Publication Date 2023-05-11
Grant Date 2024-11-19
Owner KOA CORPORATION (Japan)
Inventor
  • Toyoda, Susumu
  • Nakamura, Keishi
  • Matsubara, Shuhei

Abstract

The mounting area for an electronic component and a resistor for current detection is reduced. A current detection resistor for detecting current includes a plate-like resistive body, and a first electrode and an opposite second electrode which are stacked in a thickness direction of the resistive body and are disposed so as to sandwich the resistive body. The first electrode has a groove portion.

IPC Classes  ?

  • G01R 1/20 - Modifications of basic electric elements for use in electric measuring instrumentsStructural combinations of such elements with such instruments
  • H01C 1/142 - Terminals or tapping points specially adapted for resistorsArrangements of terminals or tapping points on resistors the terminals or tapping points being coated on the resistive element
  • H01C 17/00 - Apparatus or processes specially adapted for manufacturing resistors

73.

ALLOY FOR RESISTOR AND USE OF RESISTOR ALLOY IN RESISTOR

      
Application Number 17915677
Status Pending
Filing Date 2021-03-22
First Publication Date 2023-05-04
Owner KOA CORPORATION (Japan)
Inventor
  • Kanauchi, Naoki
  • Kumeda, Yoshitaka
  • Yoshioka, Tadahiko

Abstract

Provided is a copper-manganese-nickel based alloy having characteristics (in particular, specific resistance) close to those of a nickel-chromium based alloy. It is also an objective to provide an alloy having high processability compared to a nickel-chromium based alloy. An alloy for a resistive body includes copper, manganese, and nickel, wherein the manganese is 33 to 38% by mass, and the nickel is 8 to 15% by mass.

IPC Classes  ?

  • C22C 9/05 - Alloys based on copper with manganese as the next major constituent
  • C22C 1/04 - Making non-ferrous alloys by powder metallurgy
  • H01C 1/14 - Terminals or tapping points specially adapted for resistorsArrangements of terminals or tapping points on resistors

74.

Chip resistor and method of manufacturing chip resistor

      
Application Number 17959641
Grant Number 11967443
Status In Force
Filing Date 2022-10-04
First Publication Date 2023-05-04
Grant Date 2024-04-23
Owner KOA CORPORATION (Japan)
Inventor Kimura, Taro

Abstract

A chip resistor includes: an insulating substrate; a pair of front electrodes; a resistor connecting between both the front electrodes; an undercoat layer provided on the resistor; an overcoat layer provided on the undercoat layer, an auxiliary film provided so as to be over a connecting portion between the front electrode and the resistor at a position away from an end face of the insulating substrate; a pair of end face electrodes; and a pair of external plating layers covering the end face electrodes, the front electrodes, and the auxiliary film, wherein the auxiliary film is formed of a resin material containing metal particles, and a portion of the auxiliary film is sandwiched between the undercoat layer and the overcoat layer.

IPC Classes  ?

  • H01C 1/142 - Terminals or tapping points specially adapted for resistorsArrangements of terminals or tapping points on resistors the terminals or tapping points being coated on the resistive element
  • H01C 7/00 - Non-adjustable resistors formed as one or more layers or coatingsNon-adjustable resistors made from powdered conducting material or powdered semi-conducting material with or without insulating material

75.

CIRCUIT PROTECTION ELEMENT

      
Application Number JP2022034080
Publication Number 2023/062998
Status In Force
Filing Date 2022-09-12
Publication Date 2023-04-20
Owner KOA CORPORATION (Japan)
Inventor
  • Kato, Masashi
  • Ichikawa, Hiroshi
  • Maeno, Koji
  • Kato, Kazuyuki

Abstract

A circuit protection element (10) is provided with: a pair of electrode parts (12, 14); an element part (16) provided between the electrode parts (12, 14); a plate body (18) that is disposed along the element part (16) and that comprises an insulation body; and an exterior member (20) that covers the element part (16) and the plate body (18). In this configuration, transmission of heat when melting and cutting the element part (16) because of overcurrent is blocked by the plate body (18). Accordingly, since transmission of heat to the exterior member (20) at the time of being melted and cut is suppressed, deformation of the exterior member (20) caused by heat at the time of being melted and cut can be suppressed. Therefore, a change in the external shape of the circuit protection element (10) can be suppressed.

IPC Classes  ?

  • H01H 85/045 - General constructions or structure of low voltage fuses, i.e. below 1,000 V, or of fuses where the applicable voltage is not specified cartridge type
  • H01H 85/06 - Fusible members characterised by the fusible material
  • H01H 85/10 - Fusible members characterised by the shape or form of the fusible member with constriction for localised fusing

76.

CURRENT SENSING DEVICE

      
Application Number 17910253
Status Pending
Filing Date 2020-12-28
First Publication Date 2023-03-30
Owner KOA CORPORATION (Japan)
Inventor Kinoshita, Miyahito

Abstract

A current sensing device including: an insulating resin substrate; a current sensing element arranged in the resin substrate; a current wire provided via an insulating layer with respect to the current sensing element to flow a current through the current sensing element; a plurality of current vias connecting the current sensing element and the current wire through the insulating layer; and a voltage sensing via connected to the current sensing element to measure a voltage drop.

IPC Classes  ?

  • G01R 1/20 - Modifications of basic electric elements for use in electric measuring instrumentsStructural combinations of such elements with such instruments
  • G01R 19/00 - Arrangements for measuring currents or voltages or for indicating presence or sign thereof

77.

SHUNT RESISTOR

      
Application Number JP2022029823
Publication Number 2023/026809
Status In Force
Filing Date 2022-08-03
Publication Date 2023-03-02
Owner KOA CORPORATION (Japan)
Inventor
  • Sakai, Yoichi
  • Nakamura, Keishi
  • Mizokami, Toshifumi

Abstract

In the present invention, a shunt resistor 10 comprises a resistor 14, and electrodes 16, 18 joined to the resistor 14 and formed using aluminum as a main component. The shunt resistor 10 also comprises a plated section 30 that covers at least junctions 20, 22 of the resistor 14 and the electrodes 16, 18, and that is formed of a plating of higher specific resistance than the resistor 14.

IPC Classes  ?

  • H01C 13/00 - Resistors not provided for elsewhere

78.

ALL-SOLID POTASSIUM ION SELECTIVE ELECTRODE, AND METHOD FOR MANUFACTURING ALL-SOLID POTASSIUM ION SELECTIVE ELECTRODE

      
Application Number JP2022030856
Publication Number 2023/026883
Status In Force
Filing Date 2022-08-15
Publication Date 2023-03-02
Owner
  • KOA CORPORATION (Japan)
  • TOKYO UNIVERSITY OF SCIENCE FOUNDATION (Japan)
Inventor
  • Takayama, Toshiharu
  • Matsui, Takahiro
  • Kuribayashi, Tomoyuki
  • Takei, Yuko
  • Komaba, Shinichi
  • Tatara, Ryoichi
  • Ishihara, Kenta

Abstract

x6y22O, where x is a number greater than 0 but less than or equal to 2, y is a number greater than 0 but less than or equal to 1, and n is a number greater than or equal to 0.

IPC Classes  ?

79.

RESISTOR AND MANUFACTURING METHOD OF RESISTOR

      
Application Number 17759506
Status Pending
Filing Date 2020-12-28
First Publication Date 2023-02-09
Owner KOA Corporation (Japan)
Inventor
  • Eto, Kohji
  • Tokiwa, Yohei
  • Kaneko, Reina
  • Yamamoto, Jumpei

Abstract

A resistor is provided with a resistance body and a pair of electrodes connected to the resistance body (a first electrode body, a second electrode body), the resistance body being arranged so as to be at least separated away from a substrate board (a circuit board) when mounted on the substrate board (the circuit board), wherein the resistor has the oxide film on at least one of the resistance body and each of the electrodes (the first electrode body, the second electrode body) at a boundary portion (a bonded portion, a bonded portion) between the resistance body and each of the electrodes (the first electrode body, the second electrode body) on the mounting surface of the resistor.

IPC Classes  ?

  • H01C 17/242 - Apparatus or processes specially adapted for manufacturing resistors adapted for trimming by removing or adding resistive material by laser
  • H01C 1/034 - HousingEnclosingEmbeddingFilling the housing or enclosure the housing or enclosure being formed as coating or mould without outer sheath
  • H01C 1/144 - Terminals or tapping points specially adapted for resistorsArrangements of terminals or tapping points on resistors the terminals or tapping points being welded or soldered
  • H01C 17/28 - Apparatus or processes specially adapted for manufacturing resistors adapted for applying terminals

80.

RESISTOR

      
Application Number 17759510
Status Pending
Filing Date 2020-12-28
First Publication Date 2023-02-09
Owner KOA Corporation (Japan)
Inventor
  • Tokiwa, Yohei
  • Eto, Kohji
  • Noguchi, Tomofumi
  • Kaneko, Reina

Abstract

A resistor contains a resistance body and a pair of electrodes (a first electrode body and a second electrode body), wherein end surfaces of the resistance body are respectively abutted to and bonded to end surfaces of the electrodes (a first electrode body and a second electrode body), the electrodes (a first electrode body and a second electrode body) each includes a main body portion and a leg portion, the leg portion protruding from the main body portion in the mounting surface of the resister, and a length dimension of the resistor is equal to or shorter than 3.2 mm.

IPC Classes  ?

  • H01C 1/14 - Terminals or tapping points specially adapted for resistorsArrangements of terminals or tapping points on resistors

81.

RESISTOR AND METHOD FOR MANUFACTURING RESISTOR

      
Application Number JP2022026798
Publication Number 2023/013351
Status In Force
Filing Date 2022-07-06
Publication Date 2023-02-09
Owner KOA CORPORATION (Japan)
Inventor
  • Fukao, Hiroyuki
  • Yamaguchi, Akiyoshi

Abstract

The present invention relates to a resistor for high voltages for use in a circuit such as a power supply circuit, and to a method for manufacturing a resistor. A resistor (1) comprises electrodes (3, 4) and a resistive element (10). The resistive element (10) includes a first meandering resistive section (11) and a second meandering resistive section (12), and a trimming resistive section (13) having a trimming groove (20) for adjusting the resistance value.

IPC Classes  ?

  • H01C 17/24 - Apparatus or processes specially adapted for manufacturing resistors adapted for trimming by removing or adding resistive material
  • H01C 7/00 - Non-adjustable resistors formed as one or more layers or coatingsNon-adjustable resistors made from powdered conducting material or powdered semi-conducting material with or without insulating material
  • H01C 7/22 - Elongated resistive element being bent or curved, e.g. sinusoidal, helical

82.

CHIP-TYPE RESISTOR FOR INTEGRATION IN SUBSTRATE, MODULE HAVING INTEGRATED RESISTOR, METHOD FOR PRODUCING MODULE HAVING INTEGRATED RESISTOR, AND TRIMMING METHOD

      
Application Number JP2022024991
Publication Number 2023/286552
Status In Force
Filing Date 2022-06-22
Publication Date 2023-01-19
Owner KOA CORPORATION (Japan)
Inventor
  • Iguchi, Tomoki
  • Kinoshita, Miyahito
  • Eto, Kohji
  • Noguchi, Tomofumi

Abstract

This metal plate resistor, which is a chip-type resistor for integration in a substrate, is in plate form and comprises a resistive element, a first electrode which is joined to one end of the resistive element by a first cladding joining part, and a second electrode which is joined to the other end of the resistive element by a second cladding joining part.

IPC Classes  ?

  • H01C 13/00 - Resistors not provided for elsewhere
  • G01R 15/00 - Details of measuring arrangements of the types provided for in groups , or
  • H01C 1/14 - Terminals or tapping points specially adapted for resistorsArrangements of terminals or tapping points on resistors
  • H01C 7/00 - Non-adjustable resistors formed as one or more layers or coatingsNon-adjustable resistors made from powdered conducting material or powdered semi-conducting material with or without insulating material

83.

Shunt resistor module

      
Application Number 17766297
Grant Number 12019100
Status In Force
Filing Date 2020-09-30
First Publication Date 2023-01-19
Grant Date 2024-06-25
Owner KOA CORPORATION (Japan)
Inventor
  • Hara, Kazuhiro
  • Endo, Tamotsu

Abstract

An object is to provide a shunt resistor module that is reduced in size, can handle a large current, and can accurately detect current. A shunt resistor module of the present invention includes: a shunt resistor that includes a plurality of resistor bodies having a columnar shape, and electrodes that are located at both ends of each of the plurality of resistor bodies; and a circuit board that includes a plurality of through-holes that can house the plurality of resistor bodies, and a plurality of voltage detection terminals that detects a voltage between the electrodes of the shunt resistor that has been inserted into the plurality of through-holes, and each of the plurality of voltage detection terminals is collected near a center of gravity of the shunt resistor.

IPC Classes  ?

  • H02H 3/087 - Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition, with or without subsequent reconnection responsive to excess current for DC applications
  • G01R 15/14 - Adaptations providing voltage or current isolation, e.g. for high-voltage or high-current networks
  • H01C 13/02 - Structural combinations of resistors

84.

TEMPERATURE SENSOR

      
Application Number JP2022021910
Publication Number 2023/276518
Status In Force
Filing Date 2022-05-30
Publication Date 2023-01-05
Owner KOA CORPORATION (Japan)
Inventor
  • Toyoda Susumu
  • Nakamura Keishi

Abstract

The present invention provides a temperature sensor which has more easily enhanced strength. This temperature sensor is provided with a resin film, and a titanium metal foil that is bonded to the resin film. The titanium metal foil constitutes a conductive pattern. With respect to one embodiment of the present invention, a surface of the titanium metal foil, the surface facing the resin film, has been subjected to a surface modification treatment. With respect to one embodiment of the present invention, the thickness of the titanium metal foil is within the range of 3 to 10 µm. With respect to one embodiment of the present invention, the resin film contains a thermoplastic resin, and the thickness of the resin film is within the range of 20 to 80 µm.

IPC Classes  ?

  • H01C 7/02 - Non-adjustable resistors formed as one or more layers or coatingsNon-adjustable resistors made from powdered conducting material or powdered semi-conducting material with or without insulating material having positive temperature coefficient
  • G01K 7/16 - Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat using resistive elements

85.

SULFIDATION DETECTION SENSOR

      
Application Number 17835595
Status Pending
Filing Date 2022-06-08
First Publication Date 2022-12-29
Owner KOA CORPORATION (Japan)
Inventor Kimura, Taro

Abstract

A sulfidation detection sensor includes a rectangular parallelepiped insulating substrate, a resistor formed to adhere closely to a surface of the insulating substrate, a sulfidation detection conductor formed to adhere closely to a surface of the resistor, a protective layer that is impermeable to sulfide gas and formed to cover a portion of the sulfidation detection conductor, and a pair of electrode portions formed at both ends of the insulating substrate and connected to the resistor and the sulfidation detection conductor. The sulfidation detection conductor is made of metal having a resistance value less than that of the resistor, and includes an exposed portion exposed to the outside without being covered with the protective layer.

IPC Classes  ?

  • G01N 17/02 - Electrochemical measuring systems for weathering, corrosion or corrosion-protection measurement
  • G01N 17/04 - Corrosion probes

86.

OXYGEN SENSOR ELEMENT AND METHOD FOR MANUFACTURING SAME

      
Application Number JP2022023308
Publication Number 2022/264918
Status In Force
Filing Date 2022-06-09
Publication Date 2022-12-22
Owner
  • NAGAOKA UNIVERSITY OF TECHNOLOGY (Japan)
  • KOA CORPORATION (Japan)
Inventor
  • Okamoto Tomoichiro
  • Iguchi Kenichi
  • Ota Yukiko
  • Komatsu Ryosuke
  • Tanaka Tetsuro
  • Nishizawa Katsuhide

Abstract

237-δ25237-δ7-δ is added to said composition. As a result, interlayer peeling and cracking can be prevented from occurring due to the sinter behavior of the heat insulation layer approaching the sinter behavior of the sensing layer, and by adopting a sandwiched structure in which the sensing layer is interposed between heat insulation layers, the conservation of electric power is made possible by reducing the amount of heat dissipated from the sensing layer.

IPC Classes  ?

  • G01N 27/12 - Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating resistance of a solid body in dependence upon absorption of a fluidInvestigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating resistance of a solid body in dependence upon reaction with a fluid

87.

RESISTANCE TYPE OXYGEN GAS SENSOR AND OXYGEN SENSOR DEVICE

      
Application Number JP2022024193
Publication Number 2022/265076
Status In Force
Filing Date 2022-06-16
Publication Date 2022-12-22
Owner
  • NAGAOKA UNIVERSITY OF TECHNOLOGY (Japan)
  • KOA CORPORATION (Japan)
Inventor
  • Okamoto, Tomoichiro
  • Iguchi, Kenichi
  • Ota, Yukiko
  • Komatsu, Ryosuke
  • Ko, Zoku
  • Tanaka, Tetsuro

Abstract

2-xx3yy (wherein RE represents a rare earth element; x satisfies 0 ≤ x ≤ 1.2; and y satisfies 6.0 ≤ y ≤ 7.5).

IPC Classes  ?

  • G01N 27/12 - Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating resistance of a solid body in dependence upon absorption of a fluidInvestigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating resistance of a solid body in dependence upon reaction with a fluid

88.

Chip component

      
Application Number 17752200
Grant Number 11657932
Status In Force
Filing Date 2022-05-24
First Publication Date 2022-12-15
Grant Date 2023-05-23
Owner KOA CORPORATION (Japan)
Inventor Oka, Naoto

Abstract

A chip resistor including: a rectangular parallelepiped insulating substrate; a strip-shaped resistor; a pair of front electrodes formed on a front surface of the resistor at both ends in the longitudinal direction; an insulating protective layer; and a pair of end face electrodes formed at both ends of the insulating substrate in the longitudinal direction, each of which is connected to each end face of the resistor, corresponding one of the front electrodes, and protective film; and a pair of external electrodes, wherein a cross-sectional shape of each of the front electrodes is almost a triangle in which a side of the end face has a maximum height, and a shape of an end face of each of the end face electrodes is almost a square.

IPC Classes  ?

  • H01C 7/00 - Non-adjustable resistors formed as one or more layers or coatingsNon-adjustable resistors made from powdered conducting material or powdered semi-conducting material with or without insulating material
  • H01C 1/142 - Terminals or tapping points specially adapted for resistorsArrangements of terminals or tapping points on resistors the terminals or tapping points being coated on the resistive element

89.

Chip resistor and method for manufacturing chip resistor

      
Application Number 17828276
Grant Number 11798714
Status In Force
Filing Date 2022-05-31
First Publication Date 2022-12-15
Grant Date 2023-10-24
Owner KOA CORPORATION (Japan)
Inventor Oka, Naoto

Abstract

Resistive elements are formed in belt shape in regions sandwiched between secondary division prediction lines set onto a large substrate and extending in a direction orthogonal to primary division prediction lines, a plurality of front electrodes disposed facing each other at predetermined intervals on the resistive elements are formed so as to be across the primary division prediction lines, a glass coat layer covering each of the resistive elements and extending in the direction orthogonal to the secondary division prediction lines is formed, a resin coat layer covering an entire surface of the large substrate from a top of the glass coat layer is formed, and after that, the large substrate is diced along the primary division prediction lines and the secondary division prediction lines to obtain individual chip base bodies.

IPC Classes  ?

  • H01C 17/00 - Apparatus or processes specially adapted for manufacturing resistors
  • H01C 7/00 - Non-adjustable resistors formed as one or more layers or coatingsNon-adjustable resistors made from powdered conducting material or powdered semi-conducting material with or without insulating material
  • H01C 1/142 - Terminals or tapping points specially adapted for resistorsArrangements of terminals or tapping points on resistors the terminals or tapping points being coated on the resistive element

90.

Chip component

      
Application Number 17769855
Grant Number 12027291
Status In Force
Filing Date 2020-09-24
First Publication Date 2022-12-08
Grant Date 2024-07-02
Owner KOA CORPORATION (Japan)
Inventor
  • Akahane, Yasushi
  • Tamada, Nobuhiko

Abstract

A chip component comprises: an insulating substrate on which a resistor serving as a functional element is formed; a pair of internal electrodes (front electrodes, end surface electrodes, and back electrodes) that is formed to cover both end portions of the insulating substrate and connected to the resistor; a barrier layer that is formed on a surface of each of the internal electrodes and mainly composed of nickel; and an external connection layer that is formed on a surface of the barrier layer and mainly composed of tin, and the barrier layer is composed of alloy plating (Ni—P) including nickel and phosphorus, which is formed by electrolytic plating, and a content ratio of phosphorus relative to nickel is set in a range of 0.5% to 5% so that the barrier layer has magnetism.

IPC Classes  ?

  • H01C 1/14 - Terminals or tapping points specially adapted for resistorsArrangements of terminals or tapping points on resistors

91.

Chip resistor

      
Application Number 17741568
Grant Number 11742116
Status In Force
Filing Date 2022-05-11
First Publication Date 2022-11-24
Grant Date 2023-08-29
Owner KOA CORPORATION (Japan)
Inventor
  • Ushiyama, Kazuhisa
  • Watanabe, Yuta

Abstract

The resistor 5 is a print-formed body including a meandering shaped first region 8 connected to the first front electrode 3 and a second region 9 connected to the first region 8 via a linking portion 10 and connected to the second front electrode 4. The first region 8 is provided with an I-cut shaped first trimming groove 11 and the second region 9 is provided with an L-cut shaped second trimming groove 12, and the side of the second region 9 positioned in the direction toward which a turn portion 12b of the second trimming groove 12 extends is an oblique side 9a that inclines to approach the second front electrode 4 as it approaches the connecting portion 7.

IPC Classes  ?

  • H01C 7/22 - Elongated resistive element being bent or curved, e.g. sinusoidal, helical

92.

CURRENT DETECTION DEVICE

      
Application Number JP2022018552
Publication Number 2022/244595
Status In Force
Filing Date 2022-04-22
Publication Date 2022-11-24
Owner KOA CORPORATION (Japan)
Inventor Osawa, Ryou

Abstract

The present invention relates to a current detection device, particularly to a current detection device using a shunt resistor. A current detection device (30) is provided with a resistive body (5) and a pair of electrodes (6, 7). The electrodes (6, 7) have detecting regions (24a, 25a) defined by first slits (16, 17), second slits (26, 27), and contact surfaces (6a, 7a) at least partly contacting the resistive body (5). The electrodes (6, 7) further include voltage detecting portions (20, 21) disposed in the detecting regions (24a, 25a).

IPC Classes  ?

  • H01C 1/14 - Terminals or tapping points specially adapted for resistorsArrangements of terminals or tapping points on resistors
  • H01C 13/00 - Resistors not provided for elsewhere
  • G01R 15/00 - Details of measuring arrangements of the types provided for in groups , or

93.

SENSOR ELEMENT

      
Application Number JP2022019823
Publication Number 2022/244653
Status In Force
Filing Date 2022-05-10
Publication Date 2022-11-24
Owner KOA CORPORATION (Japan)
Inventor
  • Kanegae Satoshi
  • Miura Katsuya
  • Nagasaka Isao

Abstract

The objective of the present invention is to provide a sensor element with which it is possible to obtain a wide sensing area, and with which it is possible to obtain a substantially constant sensor sensitivity by suppressing an uneven temperature distribution in the sensing area. A sensor element (1) according to the present invention includes a base body (2), a temperature-sensitive film (3) which is formed over the entire surface of the base body and of which an electrical resistance value changes in accordance with a change in temperature, and wiring members (4, 5) connected to both ends of the temperature-sensitive film, characterized in that: the temperature-sensitive film includes areas of contact with the wiring members, and a pattern extending from the areas of contact toward the center of the base body; and the cross-sectional area of the pattern is formed to be smaller on the area of contact side than at the center of the base body.

IPC Classes  ?

  • G01P 5/12 - Measuring speed of fluids, e.g. of air streamMeasuring speed of bodies relative to fluids, e.g. of ship, of aircraft by measuring thermal variables using variation of resistance of a heated conductor

94.

Resistive material, method of manufacturing resistive material, and resistor for detecting electric current

      
Application Number 17754031
Grant Number 12087480
Status In Force
Filing Date 2020-08-06
First Publication Date 2022-10-13
Grant Date 2024-09-10
Owner KOA Corporation (Japan)
Inventor
  • Kaneko, Reina
  • Kumeda, Yoshitaka
  • Yoshioka, Tadahiko

Abstract

The resistive material contains copper and manganese, an oxide film of manganese being formed on a surface of the resistive material.

IPC Classes  ?

  • H01C 7/13 - Non-adjustable resistors formed as one or more layers or coatingsNon-adjustable resistors made from powdered conducting material or powdered semi-conducting material with or without insulating material current-responsive
  • H01C 17/02 - Apparatus or processes specially adapted for manufacturing resistors adapted for manufacturing resistors with envelope or housing
  • H01C 17/065 - Apparatus or processes specially adapted for manufacturing resistors adapted for coating resistive material on a base by thick-film techniques, e.g. serigraphy

95.

Chip resistor and method of manufacturing chip resistor

      
Application Number 17703798
Grant Number 11646136
Status In Force
Filing Date 2022-03-24
First Publication Date 2022-10-06
Grant Date 2023-05-09
Owner KOA CORPORATION (Japan)
Inventor
  • Sasaki, Homare
  • Kamijo, Yasuhiro

Abstract

A chip resistor includes an insulated substrate having a rectangular parallelepiped shape, a first front electrode and a second front electrode created on both longitudinal ends of the insulated substrate, and a resistive element making a connection between the first and second front electrodes. The resistive element is formed in a meandering shape with a first region and a second region continuing in series via a jointing section between a pair of connecting portions. Moreover, in the first region, a first trimming groove for rough adjustment is formed to elongate a current path of the resistive element. In the second region, a second trimming groove is formed for fine adjustment extending in a direction angled with respect to a straight line along a direction in which the first trimming groove extends.

IPC Classes  ?

  • H01C 7/00 - Non-adjustable resistors formed as one or more layers or coatingsNon-adjustable resistors made from powdered conducting material or powdered semi-conducting material with or without insulating material
  • H01C 17/00 - Apparatus or processes specially adapted for manufacturing resistors
  • H01C 17/22 - Apparatus or processes specially adapted for manufacturing resistors adapted for trimming
  • H01C 1/14 - Terminals or tapping points specially adapted for resistorsArrangements of terminals or tapping points on resistors

96.

CHIP-TYPE CURRENT FUSE

      
Application Number 17638752
Status Pending
Filing Date 2020-05-21
First Publication Date 2022-10-06
Owner KOA CORPORATION (Japan)
Inventor
  • Ichikawa, Hiroshi
  • Oguchi, Tomonori
  • Karasawa, Atsushi

Abstract

The chip-type current fuse is configured to include a fuse element 5 formed between a first front electrode 3 and a second front electrode 4. The fuse element 5 includes: a first linear portion 5a that has an end connected to the first front electrode 3 and extends in a direction toward the second front electrode 4; a second linear portion 5b that has an end connected to the second front electrode 4 and extends in parallel to the first linear portion 5a in a direction toward the first front electrode 3; and an inclined linear portion 5c that links the first linear portion 5a and the second linear portion 5b to each other. The inclined linear portion 5c is connected at an acute angle to each of the first linear portion 5a and the second linear portion 5b.

IPC Classes  ?

  • H01H 37/76 - Contact member actuated by melting of fusible material, actuated due to burning of combustible material or due to explosion of explosive material

97.

SENSOR DEVICE

      
Application Number 17698459
Status Pending
Filing Date 2022-03-18
First Publication Date 2022-09-29
Owner KOA CORPORATION (Japan)
Inventor Yazawa, Miki

Abstract

A sensor device according to the present invention includes: a sensor element including a temperature-sensitive resistor; and a protective cover that protects the sensor element, wherein the sensor element has a shape extending long along one direction, and the protective cover surrounds a periphery of the sensor element with a plurality of support pillars extending obliquely with respect to a longitudinal direction of the sensor element. It is preferable that the plurality of support pillars intersect in a lattice-like manner.

IPC Classes  ?

  • G01K 7/24 - Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat using resistive elements the element being a non-linear resistance, e.g. thermistor in a specially-adapted circuit, e.g. bridge circuit
  • G01K 1/08 - Protective devices, e.g. casings

98.

RESISTOR AND MANUFACTURING METHOD FOR RESISTOR

      
Application Number JP2022011949
Publication Number 2022/202550
Status In Force
Filing Date 2022-03-16
Publication Date 2022-09-29
Owner KOA CORPORATION (Japan)
Inventor
  • Kaneko, Reina
  • Noguchi, Tomofumi
  • Sakai, Yoichi
  • Yamamoto, Junpei
  • Iguchi, Tomoki

Abstract

A resistor comprising a resistor body and electrodes provided on the resistor body, wherein the resistor body has an oxide film on the front surface thereof.

IPC Classes  ?

  • H01C 1/02 - HousingEnclosingEmbeddingFilling the housing or enclosure
  • H01C 13/00 - Resistors not provided for elsewhere
  • H01C 7/00 - Non-adjustable resistors formed as one or more layers or coatingsNon-adjustable resistors made from powdered conducting material or powdered semi-conducting material with or without insulating material
  • H01C 17/02 - Apparatus or processes specially adapted for manufacturing resistors adapted for manufacturing resistors with envelope or housing

99.

GAS SENSOR AND METHOD FOR PRODUCING ALKALINE EARTH FERRITE

      
Application Number 17754126
Status Pending
Filing Date 2020-08-26
First Publication Date 2022-09-15
Owner
  • Ntional Institute of Technology (Japan)
  • KOA Corporation (Japan)
Inventor
  • Matsushima, Shigenori
  • Obata, Kenji
  • Guchi, Kenichi
  • Ota, Yukiko
  • Nagata, Hisakazu
  • Urano, Koichi

Abstract

The gas sensor is provided with: a base material; a first electrode and a second electrode arranged on the base material; and a gas detection member connected to the first electrode and the second electrode, wherein the gas detection member contains flaky particles of alkaline earth ferrite.

IPC Classes  ?

  • G01N 27/12 - Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating resistance of a solid body in dependence upon absorption of a fluidInvestigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating resistance of a solid body in dependence upon reaction with a fluid
  • C01G 49/00 - Compounds of iron

100.

MOUNTING STRUCTURE FOR CHIP COMPONENT

      
Application Number JP2022007577
Publication Number 2022/190879
Status In Force
Filing Date 2022-02-24
Publication Date 2022-09-15
Owner KOA CORPORATION (Japan)
Inventor Akahane Yasushi

Abstract

Provided is a mounting structure for a chip component having high heat-shock resistance. In the mounting structure for a chip resistor 1 according to the present invention, the separation distance L1 between a pair of rear-surface electrodes 3 formed on an insulation substrate 2 of a chip resistor 20 is set lower than the separation distance L2 between a pair of lands 31 provided to a circuit substrate 30. Thick-walled sections (first electrode sections 3a) are formed in the rear-surface electrodes 3. External electrodes 9 bonded to the rear-surface electrodes 3 are connected to the corresponding lands 31 via solder 32 in a state in which the tops of the thick-walled sections are positioned directly above inner-side ends of the lands 31.

IPC Classes  ?

  • H01C 7/00 - Non-adjustable resistors formed as one or more layers or coatingsNon-adjustable resistors made from powdered conducting material or powdered semi-conducting material with or without insulating material
  • H01C 1/148 - Terminals or tapping points specially adapted for resistorsArrangements of terminals or tapping points on resistors the terminals embracing or surrounding the resistive element
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