Littelfuse, Inc.

United States of America

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[Owner] Littelfuse, Inc. 795
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SymCom, Inc. 2
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New (last 4 weeks) 10
2025 August (MTD) 2
2025 July 9
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2025 May 2
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IPC Class
H01H 85/20 - Bases for supporting the fuseSeparate parts thereof 55
H01H 69/02 - Manufacture of fuses 54
H01H 85/143 - Electrical contactsFastening fusible members to such contacts 54
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 53
H01H 85/175 - Casings characterised by the casing shape or form 44
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NICE Class
09 - Scientific and electric apparatus and instruments 132
42 - Scientific, technological and industrial services, research and design 15
07 - Machines and machine tools 12
37 - Construction and mining; installation and repair services 10
40 - Treatment of materials; recycling, air and water treatment, 10
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Status
Pending 67
Registered / In Force 732
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1.

ISOLATION DEVICE HAVING INDUCTIVE AND CAPACITIVE ISOLATION CIRCUIT

      
Application Number 18442322
Status Pending
Filing Date 2024-02-15
First Publication Date 2025-08-21
Owner Littelfuse, Inc. (USA)
Inventor
  • Egurrola, Daniel
  • Martinez, Cesar

Abstract

An isolation circuit arrangement may include an isolation barrier and may be configured to receive one or more input signals on a low voltage side and deliver one or more output signals on a high voltage side. The isolation barrier may include a first capacitor, arranged along a first input line, a second capacitor arranged along a second input line, electrically parallel to the first capacitor, and a first inductor having a first end that is coupled to a first electrode of the first capacitor and having a second end that is coupled to a first electrode of the second capacitor. The isolation barrier may further include a center tap, connected to the first inductor, and a second inductor that is inductively coupled to the first inductor and is arranged with a first output end and a second output end on a high voltage side of the isolation circuit arrangement.

IPC Classes  ?

  • H03K 17/691 - Electronic switching or gating, i.e. not by contact-making and -breaking characterised by the use of specified components by the use, as active elements, of semiconductor devices the devices being field-effect transistors with galvanic isolation between the control circuit and the output circuit using transformer coupling
  • H03K 17/567 - Circuits characterised by the use of more than one type of semiconductor device, e.g. BIMOS, composite devices such as IGBT

2.

METAL CONNECTOR IN SEMICONDUCTOR DEVICE PACKAGE

      
Application Number 18429723
Status Pending
Filing Date 2024-02-01
First Publication Date 2025-08-07
Owner Littelfuse, Inc. (USA)
Inventor
  • Spann, Thomas
  • Lachmann, Thomas

Abstract

A connector for a semiconductor device package. The connector may include a middle portion, having a curved concave shape in a front view, with respect to a given surface. The connector may include a first contacting portion, integrally connected to the middle portion on a first side, as wells as a second contacting portion, integrally connected to the middle portion on a second side, wherein the first contacting portion and the second contacting portion define a curved convex surface in the front view. with respect to the given surface. In some implementations, the connector may include a slot assembly as well as one or more indents that define a meander path, which structure imparts a greater elastic flexibility, such as under mechanical load.

IPC Classes  ?

  • H01L 23/00 - Details of semiconductor or other solid state devices

3.

CORNER RELIEF UNDERCUT TO REDUCE DIE DAMAGE

      
Application Number 18424994
Status Pending
Filing Date 2024-01-29
First Publication Date 2025-07-31
Owner Littelfuse, Inc. (USA)
Inventor
  • Torre, Hermie Dela
  • Galang, Librado
  • Costoya, Jason
  • Garcia, Nathaniel

Abstract

Disclosed are dies carriers for receiving a plurality of circuit protection devices. In some embodiments, a die carrier may include a die body, and a recess in the die body, wherein the recess is operable to receive a die for a circuit protection device. The recess may include a central area defined by a set of sidewalls, and a plurality of corner areas extending from the central area, each of the corner areas defined by a first curved wall, a second curved wall connected to the first curved wall, and a third curved wall connected with the second curved wall, wherein a first center of curvature of the first curved wall is in a different location than a second center of curvature of the second curved wall.

IPC Classes  ?

  • H01L 21/673 - Apparatus specially adapted for handling semiconductor or electric solid state devices during manufacture or treatment thereofApparatus specially adapted for handling wafers during manufacture or treatment of semiconductor or electric solid state devices or components using specially adapted carriers

4.

MULTI-CHANNEL TRIGGER SENSOR FOR PYROTECHNIC FUSES

      
Application Number 19034013
Status Pending
Filing Date 2025-01-22
First Publication Date 2025-07-31
Owner Littelfuse, Inc. (USA)
Inventor
  • Hetzmannseder, Engelbert
  • Mikstaite, Modesta
  • Giraitis, Gintautas

Abstract

Disclosed are multi-channel input trigger sensors for pyrotechnic fuses. In some embodiments, the current sensor may include a multi-channel-input triggering pyrotechnic fuse for electric vehicle (EV) applications, which is fast, reliable, and operates with different trigger sources and with different vehicle modes.

IPC Classes  ?

  • H02H 3/08 - 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
  • B60L 3/12 - Recording operating variables
  • G07C 5/08 - Registering or indicating performance data other than driving, working, idle, or waiting time, with or without registering driving, working, idle, or waiting time
  • H02H 1/00 - Details of emergency protective circuit arrangements

5.

HIGH CURRENT DISCONNECT MODULE

      
Application Number 18584666
Status Pending
Filing Date 2024-02-22
First Publication Date 2025-07-31
Owner Littelfuse, Inc. (USA)
Inventor
  • Bugryn, James
  • Pepa, Brandon
  • Stuckman, Brian
  • Piemonte, Timothy

Abstract

A fused disconnect switch may include a fuse carrier to house a fuse, an actuator configured to reversibly engage and disengage with the fuse carrier; a common trip link, mechanically coupled to move in concert with the actuator, and a contact arm, indirectly mechanically coupled to the common trip link. As such, when the fuse carrier is disposed in an engaged position, the contact arm is free to move into a closed position to make electrical contact with a fixed contact, and when the fuse carrier is in a disengage position, the contact arm is prevented from moving into the closed position.

IPC Classes  ?

  • H01H 85/25 - Safety arrangements preventing or inhibiting contact with live parts, including operation of isolation on removal of cover
  • H01H 85/02 - Protective devices in which the current flows through a part of fusible material and this current is interrupted by displacement of the fusible material when this current becomes excessive Details
  • H01H 85/32 - Indicating lamp structurally associated with the protective device

6.

LF LOGIK

      
Application Number 019221738
Status Pending
Filing Date 2025-07-22
Owner Littelfuse, Inc. (USA)
NICE Classes  ? 09 - Scientific and electric apparatus and instruments

Goods & Services

Downloadable software application for configuring electronic devices; downloadable software application for configuring electronic devices which communicate on a Controller Area Network (CAN) protocol.

7.

LF LOGIK

      
Application Number 019221739
Status Pending
Filing Date 2025-07-22
Owner Littelfuse, Inc. (USA)
NICE Classes  ? 09 - Scientific and electric apparatus and instruments

Goods & Services

Downloadable software application for configuring electronic devices; downloadable software application for configuring electronic devices which communicate on a Controller Area Network (CAN) protocol.

8.

GUARDIOHM

      
Serial Number 99296138
Status Pending
Filing Date 2025-07-22
Owner Littelfuse, Inc. ()
NICE Classes  ? 09 - Scientific and electric apparatus and instruments

Goods & Services

Electrical devices in the nature of a multi-functional protection relay device with neutral ground resistor, ground check and ground fault monitoring

9.

LF LOGIK

      
Application Number 241273800
Status Pending
Filing Date 2025-07-21
Owner Littelfuse, Inc. (USA)
NICE Classes  ? 09 - Scientific and electric apparatus and instruments

Goods & Services

(1) Downloadable software application for configuring electronic devices which communicate on a Controller Area Network (CAN) protocol

10.

LF LOGIK

      
Application Number 241273900
Status Pending
Filing Date 2025-07-21
Owner Littelfuse, Inc. (USA)
NICE Classes  ? 09 - Scientific and electric apparatus and instruments

Goods & Services

(1) Downloadable software application for configuring electronic devices which communicate on a Controller Area Network (CAN) protocol

11.

BRANCH PROTECTOR

      
Serial Number 99284086
Status Pending
Filing Date 2025-07-15
Owner Littelfuse, Inc. ()
NICE Classes  ? 09 - Scientific and electric apparatus and instruments

Goods & Services

Fuses; fuses for electrical circuits; electrical circuit switches

12.

PRESS PACK POWER SEMICONDUCTOR DEVICE WITH LOCATOR STRIP

      
Application Number 18398608
Status Pending
Filing Date 2023-12-28
First Publication Date 2025-07-03
Owner Littelfuse, Inc. (USA)
Inventor
  • Spann, Thomas
  • Geo, Joseph

Abstract

A press pack power semiconductor device can include a housing, a semiconductor, and a locator strip deformed into a ring-like shape to concentrically fit within the housing and concentrically locate at least part of the semiconductor therein. The locator strip can include a first plurality of regions regularly interspersed with a second plurality of regions along a length of the locator strip, and each of the first plurality of regions can have a first cross-sectional area that can be smaller than a second cross-sectional area of each of the second plurality of regions.

IPC Classes  ?

  • H01L 23/544 - Marks applied to semiconductor devices, e.g. registration marks, test patterns
  • H01L 23/00 - Details of semiconductor or other solid state devices

13.

POWER SEMICONDUCTOR MODULE HAVING TRAPEZOIDAL SUBSTRATE

      
Application Number US2024058188
Publication Number 2025/144556
Status In Force
Filing Date 2024-12-03
Publication Date 2025-07-03
Owner LITTELFUSE, INC. (USA)
Inventor
  • Ong, Yong Ai
  • Spann, Thomas

Abstract

A semiconductor device package. The semiconductor device package may include a baseplate, the baseplate comprising at least one through hole, and a substrate assembly, comprising a plurality of ceramic plates that are affixed to the base plate, wherein at least one ceramic plate of the plurality of ceramic plates comprises a trapezoidal shape. As such, at least one ceramic plate of the plurality of ceramic plates has a trapezoidal shape as defined within a main plane of base plate.

IPC Classes  ?

  • H05K 1/02 - Printed circuits Details
  • H01L 23/367 - Cooling facilitated by shape of device
  • H01L 23/373 - Cooling facilitated by selection of materials for the device
  • H01L 23/40 - Mountings or securing means for detachable cooling or heating arrangements
  • H05K 1/03 - Use of materials for the substrate
  • H05K 3/00 - Apparatus or processes for manufacturing printed circuits

14.

PRESS PACK POWER SEMICONDUCTOR DEVICE WITH LOCATOR STRIP

      
Application Number US2024058194
Publication Number 2025/144557
Status In Force
Filing Date 2024-12-03
Publication Date 2025-07-03
Owner LITTELFUSE, INC. (USA)
Inventor
  • Spann, Thomas
  • Geo, Joseph

Abstract

A press pack power semiconductor device can include a housing, a semiconductor, and a locator strip deformed into a ring-like shape to concentrically fit within the housing and concentrically locate at least part of the semiconductor therein. The locator strip can include a first plurality of regions regularly interspersed with a second plurality of regions along a length of the locator strip, and each of the first plurality of regions can have a first cross-sectional area that can be smaller than a second cross-sectional area of each of the second plurality of regions.

IPC Classes  ?

  • H01L 23/051 - ContainersSeals characterised by the shape the container being a hollow construction and having a conductive base as a mounting as well as a lead for the semiconductor body another lead being formed by a cover plate parallel to the base plate, e.g. sandwich type
  • H01L 23/16 - Fillings or auxiliary members in containers, e.g. centering rings

15.

PACKAGE DEVICE BASEPLATE INCLUDING PLATFORM SECTION

      
Application Number CN2024139644
Publication Number 2025/124598
Status In Force
Filing Date 2024-12-16
Publication Date 2025-06-19
Owner
  • LITTELFUSE, INC. (USA)
  • TAI, Chuyao (USA)
Inventor
  • Ong, Yong Ai
  • Tai, Chuyao

Abstract

Disclosed are approaches for reducing curvature and stress of baseplate of a package device. In some embodiments, a device may include a substrate including a base section connected with a platform section, wherein the platform section extends from a first main side of the base section. The device may further include a direct-copper-bonded (DCB) substrate coupled to the substrate, wherein the DCB substrate comprises a first conductive layer coupled to an insulative substrate layer, and wherein the first conductive layer is coupled to the platform section of the substrate.

IPC Classes  ?

16.

Jump stud fuse module

      
Application Number 18533284
Grant Number 12387898
Status In Force
Filing Date 2023-12-08
First Publication Date 2025-06-12
Grant Date 2025-08-12
Owner Littelfuse, Inc. (USA)
Inventor
  • Jozwiak, Andrew
  • Glessner, Jeremy

Abstract

A jump stud assembly including a housing, electrically conductive first and second studs extending through a floor of the housing into a compartment defined by the housing, and a fuse module including a mounting block having a through-hole extending therethrough, a fuse plate having an upper portion on a top of the mounting block and having a through-hole aligned with the through-hole of the mounting block, a lower portion on a bottom of the mounting block and having a through-hole aligned with the through-hole of the mounting block, and a fusible element adjacent a sidewall of the mounting block connecting the upper portion of the fuse plate to the lower portion of the fuse plate, wherein the fuse module is mounted on a portion of the first stud outside the compartment with the upper portion of the fuse plate in electrical communication with the first stud.

IPC Classes  ?

  • H01H 85/175 - Casings characterised by the casing shape or form
  • H01H 85/10 - Fusible members characterised by the shape or form of the fusible member with constriction for localised fusing

17.

FUSE WITH CAST ARC SUPPRESSING MATERIALS FOR IMPROVED BREAKING CAPACITY

      
Application Number 18939638
Status Pending
Filing Date 2024-11-07
First Publication Date 2025-06-12
Owner Littelfuse, Inc. (USA)
Inventor
  • Oyewole, Oluwaseun
  • Doms, Marco
  • Shenoy, Arjuna
  • Pineda, Martin
  • Martis, Claran

Abstract

A fuse including a fuse body, a fusible element disposed within the fuse body, first and second terminals extending from opposite ends of the fusible element and out of the fuse body, and a quantity of arc suppressing material formed on the fusible element, wherein the arc suppressing material is formed of a mixture of sand, an arc suppressant, and a flame retarding binder.

IPC Classes  ?

  • H01H 85/38 - Means for extinguishing or suppressing arc

18.

RAPID REACTION PTC CIRCUIT PROTECTION DEVICE

      
Application Number 18954952
Status Pending
Filing Date 2024-11-21
First Publication Date 2025-06-05
Owner Littelfuse, Inc. (USA)
Inventor
  • Tian, Yu
  • Ku, Chihao
  • Wang, Bing
  • Liu, Nina

Abstract

A positive temperature coefficient (PTC) circuit protection device including a dielectric substrate layer, first and second high resistance layers disposed on a top surface of the substrate layer in a spaced apart relationship to define a gap therebetween, a PTC layer disposed on the top surface of the substrate layer in the gap and in contact with the first and second high resistance layers, a mask layer covering a top surface of the PTC layer and portions of top surfaces of the first and second high resistance layers, an electrically conductive first terminal covering a first longitudinal end of the substrate layer and an outermost end of the first high resistance layer distal from the PTC layer, and an electrically conductive second terminal covering a second longitudinal end of the substrate layer and an outermost end of the second high resistance layer distal from the PTC layer.

IPC Classes  ?

  • H02H 9/02 - Emergency protective circuit arrangements for limiting excess current or voltage without disconnection responsive to excess current
  • H01C 1/14 - Terminals or tapping points specially adapted for resistorsArrangements of terminals or tapping points on resistors
  • 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

19.

PPTC DEVICE INCLUDING MULTILAYER ELECTRODES

      
Application Number 18954973
Status Pending
Filing Date 2024-11-21
First Publication Date 2025-05-29
Owner Littelfuse, Inc. (USA)
Inventor
  • Liu, Nina
  • Li, Pinghong
  • Ku, Chihao
  • Wang, Bing
  • Johler, Werner

Abstract

Approaches provided herein include a protection device assembly including multilayer electrodes. In some embodiments, a protection device assembly may include a protection component, a first electrode layer extending along a first main side of the protection component, and a second electrode layer extending along a second main side of the protection component. The protection device assembly may further include a first substrate layer disposed over at least one of: the first electrode layer, and the second electrode layer, a foil layer disposed over the first substrate layer, wherein the foil layer is partially separated from the first electrode layer by the first substrate layer, and a solder pad extending around an end of the protection component and the first substrate layer, wherein the solder pad is in contact with the foil layer.

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

20.

CHIP FUSE WITH FLOATING LEADS

      
Application Number 18930138
Status Pending
Filing Date 2024-10-29
First Publication Date 2025-05-15
Owner Littelfuse, Inc. (USA)
Inventor
  • Rosios, Maria Lily Espenilla
  • Aleta, Caryl Nicole

Abstract

A chip fuse including a fuse body with an electrically insulating floating lead support layer, a metallic first floating lead and a metallic second floating lead disposed on the floating lead support layer and spaced apart to define a gap therebetween, an electrically insulating fuse support layer disposed adjacent, and parallel to, the floating lead support layer, and an electrically conductive fuse layer disposed on the fuse support layer, the fuse layer including a first terminal portion and a second terminal portion connected by a fusible portion. The chip fuse further includes an electrically conductive first end termination and an electrically conductive second end termination disposed on opposing ends of the fuse body, wherein the first end termination is electrically connected to the first terminal portion and the first floating lead and wherein the second end termination is electrically connected to the second terminal portion and the second floating lead.

IPC Classes  ?

  • H01H 85/055 - Fusible members
  • H01H 85/02 - Protective devices in which the current flows through a part of fusible material and this current is interrupted by displacement of the fusible material when this current becomes excessive Details
  • H01H 85/143 - Electrical contactsFastening fusible members to such contacts

21.

METHODS OF PREPARING METAL SHEETS FOR A DCB / DAB SUBSTRATE BONDING PROCESS

      
Application Number 18486643
Status Pending
Filing Date 2023-10-13
First Publication Date 2025-04-17
Owner Littelfuse, Inc. (USA)
Inventor Spann, Thomas

Abstract

Novel methods of preparing a metal bonded substrate. A method may include providing a ceramic substrate, the ceramic substrate comprising a ceramic body. The method may include bonding a thick metal sheet to the ceramic substrate, wherein the bonding comprises forming a metal oxide layer by powder deposition on a metal surface, and bringing the ceramic substrate and thick metal sheet together, wherein the metal oxide layer and the thick metal sheet interact to form an interface layer between the thick metal sheet and the ceramic substrate, after the bonding.

IPC Classes  ?

  • B32B 15/20 - Layered products essentially comprising metal comprising aluminium or copper
  • B32B 18/00 - Layered products essentially comprising ceramics, e.g. refractory products
  • B32B 37/06 - Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the heating method

22.

FUSE HOLDER WITH SLIDING JOINT

      
Application Number 18487194
Status Pending
Filing Date 2023-10-16
First Publication Date 2025-04-17
Owner Littelfuse, Inc. (USA)
Inventor
  • Molina, Sergio Armendariz
  • Morales, Jesus Roberto

Abstract

A fuse holder can include a first holding part and a second holding part. The first holding part can include a first mounting apparatus, a first joint interface, and a first conductive terminal therebetween, and the second holding part can include a second mounting apparatus, a second joint interface, and a second conductive terminal therebetween. The first joint interface can lock with the second joint interface in a primary latching position or a secondary latching position. When the first joint interface locks with the second joint interface in the primary latching position, the first conductive terminal can be a first distance from the second conductive terminal, but when the first joint interface locks with the second joint interface in the secondary latching position, the first conductive terminal can be a second distance from the second conductive terminal that is greater than the first distance.

IPC Classes  ?

  • H01H 85/20 - Bases for supporting the fuseSeparate parts thereof

23.

NOVEL METHODS OF PREPARING METAL SHEETS FOR A DCB / DAB SUBSTRATE BONDING PROCESS

      
Application Number US2024050908
Publication Number 2025/080935
Status In Force
Filing Date 2024-10-11
Publication Date 2025-04-17
Owner LITTELFUSE, INC. (USA)
Inventor Spann, Thomas

Abstract

Novel methods of preparing a metal bonded substrate. A method may include providing a ceramic substrate, the ceramic substrate comprising a ceramic body. The method may include bonding a thick metal sheet to the ceramic substrate, wherein the bonding comprises forming a metal oxide layer by powder deposition on a metal surface, and bringing the ceramic substrate and thick metal sheet together, wherein the metal oxide layer and the thick metal sheet interact to form an interface layer between the thick metal sheet and the ceramic substrate, after the bonding.

IPC Classes  ?

  • C04B 37/02 - Joining burned ceramic articles with other burned ceramic articles or other articles by heating with metallic articles

24.

DIKE AS EPOXY SQUEEZE OUT BARRIER IN FUSE DEVICES

      
Application Number 18819127
Status Pending
Filing Date 2024-08-29
First Publication Date 2025-03-06
Owner Littelfuse, Inc. (USA)
Inventor
  • Rosios, Lily
  • Retardo, Roel
  • Pia, Lowel

Abstract

A dike as an epoxy squeeze out barrier in a fuse device is provided. The fuse device can include first and second layers of laminate material, a cavity formed by central openings of the first and second layers of the laminate material, a fuse element that is supported by at least one of the first and second layers of the laminate material and traverses the cavity, an adhesive located on at least one of the first and second layers of the laminate material for bonding thereof, and a dike located on at least one of the first and second layers of the laminate material and surrounding a circumference of the cavity. When the first and second layers of the laminate material, the fuse element, the adhesive, and the dike are pressed together during manufacture, the dike can prevent the adhesive from flowing into the cavity.

IPC Classes  ?

  • H01H 85/00 - Protective devices in which the current flows through a part of fusible material and this current is interrupted by displacement of the fusible material when this current becomes excessive
  • H01H 69/02 - Manufacture of fuses

25.

FUSE SOCKET CAP

      
Application Number 18825188
Status Pending
Filing Date 2024-09-05
First Publication Date 2025-03-06
Owner Littelfuse, Inc. (USA)
Inventor
  • Retardo, Roel
  • De Leon, Conrado
  • Manalo, Ednel

Abstract

A fuse device is provided that can include a rectangular fuse and a round fuse socket cap that can include a rectangular receptacle for receiving the fuse. The fuse socket cap and the fuse can be free of red phosphorous, and the rectangular receptacle can consume a percentage of a surface area or a volume of the fuse socket cap below a predetermined threshold that prevents reduction of a breaking capacity of the round fuse socket cap.

IPC Classes  ?

  • H01H 85/20 - Bases for supporting the fuseSeparate parts thereof
  • H01H 69/02 - Manufacture of fuses
  • H01H 85/17 - Casings characterised by the casing material
  • H01H 85/175 - Casings characterised by the casing shape or form
  • H01H 85/43 - Means for exhausting or absorbing gases liberated by fusing arc, or for ventilating excess pressure generated by heating

26.

TERMINAL DESIGNS FOR ADJUSTING HARNESS PROTECTION TIME

      
Application Number 18812043
Status Pending
Filing Date 2024-08-22
First Publication Date 2025-02-27
Owner Littelfuse, Inc. (USA)
Inventor
  • Fang, Yan
  • Chen, Jianhua
  • Wang, Jun Gang

Abstract

A terminal assembly, arranged for an automobile harness, comprising: a substrate; a modified terminal, arranged as a plate structure that is arranged on the substrate and extends perpendicularly with respect to a plane of the substrate; and a resettable fuse component, the resettable fuse component comprising a polymer positive temperature coefficient (PPTC) material, and coupled in series with the modified terminal.

IPC Classes  ?

  • H02H 5/04 - Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal non-electric working conditions with or without subsequent reconnection responsive to abnormal temperature
  • B60R 16/02 - Electric or fluid circuits specially adapted for vehicles and not otherwise provided forArrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric

27.

METAL TAB FOR POWER SEMICONDUCTOR MODULE

      
Application Number 18233403
Status Pending
Filing Date 2023-08-14
First Publication Date 2025-02-20
Owner Littelfuse, Inc. (USA)
Inventor
  • Lachmann, Thomas
  • Spann, Thomas

Abstract

A connector for contacting a semiconductor chip. The connector may include a tab, where the tab includes an outer portion, having a planar shape, the outer portion having a lower surface, adapted to contact a surface of the semiconductor chip, and an upper surface that defines a main plane of the tab. The tab may also include a ring potion, the ring portion connected to the outer portion and extending proud of the main plane, wherein the ring portion defines an inner hole within the tab structure, the inner hole being adapted to expose a contact portion of the surface of the semiconductor chip, wherein the ring portion includes at least two slots. The connector may further include a clip, comprising a connection portion, the connection portion having an aperture that is adapted to couple around the ring portion.

IPC Classes  ?

  • H01L 23/00 - Details of semiconductor or other solid state devices
  • H01L 23/31 - Encapsulation, e.g. encapsulating layers, coatings characterised by the arrangement

28.

METAL TAB FOR POWER SEMICONDUCTOR MODULE

      
Application Number US2024042016
Publication Number 2025/038590
Status In Force
Filing Date 2024-08-13
Publication Date 2025-02-20
Owner LITTELFUSE, INC. (USA)
Inventor
  • Lachmann, Thomas
  • Spann, Thomas

Abstract

A connector for contacting a semiconductor chip. The connector may include a tab, where the tab includes an outer portion, having a planar shape, the outer portion having a lower surface, adapted to contact a surface of the semiconductor chip, and an upper surface that defines a main plane of the tab. The tab may also include a ring potion, the ring portion connected to the outer portion and extending proud of the main plane, wherein the ring portion defines an inner hole within the tab structure, the inner hole being adapted to expose a contact portion of the surface of the semiconductor chip, wherein the ring portion includes at least two slots. The connector may further include a clip, comprising a connection portion, the connection portion having an aperture that is adapted to couple around the ring portion.

IPC Classes  ?

  • H01L 23/16 - Fillings or auxiliary members in containers, e.g. centering rings
  • H01L 23/52 - Arrangements for conducting electric current within the device in operation from one component to another

29.

LF LOGIK

      
Serial Number 99039790
Status Pending
Filing Date 2025-02-13
Owner Littelfuse, Inc. ()
NICE Classes  ? 09 - Scientific and electric apparatus and instruments

Goods & Services

Downloadable software application for configuring electronic devices which communicate on a Controller Area Network (CAN) protocol

30.

LF LOGIK

      
Serial Number 99039807
Status Pending
Filing Date 2025-02-13
Owner Littelfuse, Inc. ()
NICE Classes  ? 09 - Scientific and electric apparatus and instruments

Goods & Services

Downloadable software application for configuring electronic devices which communicate on a Controller Area Network (CAN) protocol

31.

METAL OXIDE-POLYANILINE POLYMER MATRIX VARISTOR

      
Application Number 18232172
Status Pending
Filing Date 2023-08-09
First Publication Date 2025-02-13
Owner Littelfuse, Inc. (USA)
Inventor
  • Oyewole, Oluwaseun Kehinde
  • Doms, Marco

Abstract

A method of manufacturing a metal oxide varistor (MOV), the method including placing a quantity of a MOV composition in a pressing die, the MOV composition including metal oxide granules mixed with a polyaniline-polymer, performing a pressing operation including operating the pressing die to compress the MOV composition into a solid MOV chip, and applying first and second electrodes to opposing first and second sides of the MOV chip, wherein the pressing operation is performed at a temperature in a range of 15 degrees Celsius to 200 degrees Celsius.

IPC Classes  ?

  • H01C 7/112 - ZnO type
  • H01C 1/034 - HousingEnclosingEmbeddingFilling the housing or enclosure the housing or enclosure being formed as coating or mould without outer sheath
  • 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 7/10 - 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 voltage responsive, i.e. varistors
  • H01C 17/00 - Apparatus or processes specially adapted for manufacturing resistors
  • 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
  • H01C 17/28 - Apparatus or processes specially adapted for manufacturing resistors adapted for applying terminals

32.

OVERCURRENT PROTECTION OF POWER SEMICONDUCTOR PACKAGES USING INTEGRATED POSITIVE TEMPERATURE INDICATOR

      
Application Number 18228436
Status Pending
Filing Date 2023-07-31
First Publication Date 2025-02-06
Owner Littelfuse, Inc. (USA)
Inventor
  • Oyewole, Oluwaseun Kehinde
  • Martinez, Cesar
  • Godinez, Sergio Fuentes
  • Perraud, Francois
  • Doms, Marco
  • Pineda, Martin

Abstract

A semiconductor device protection arrangement. The semiconductor device protection arrangement may include a semiconductor chip; a controller, coupled to the power semiconductor chip; and a temperature sensor, disposed in thermal contact with the semiconductor chip, where the temperature sensor includes a positive temperature indicator (PTI) component.

IPC Classes  ?

  • H02H 5/04 - Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal non-electric working conditions with or without subsequent reconnection responsive to abnormal temperature

33.

VERTICAL FUSE BLOCK

      
Application Number 18785141
Status Pending
Filing Date 2024-07-26
First Publication Date 2025-02-06
Owner Littelfuse, Inc. (USA)
Inventor
  • Guerrero, Juan
  • Lambaz, Sadeddin

Abstract

Approaches disclosed herein are related to vertically oriented fusible devices and vertically oriented fuse blocks. In one approach, a vertical fuse assembly may include a body comprising an upper section and a lower section, and a fuse extending between an upper terminal and a lower terminal, wherein the upper terminal is positioned within the upper section, wherein the lower terminal is positioned within the lower section, and wherein the lower terminal extends through the lower section. The vertical fuse assembly may further include a side terminal adjacent the fuse body, wherein the side terminal extends through the lower section.

IPC Classes  ?

  • H01H 85/02 - Protective devices in which the current flows through a part of fusible material and this current is interrupted by displacement of the fusible material when this current becomes excessive Details
  • H01H 85/20 - Bases for supporting the fuseSeparate parts thereof
  • H01H 85/38 - Means for extinguishing or suppressing arc
  • H01H 85/47 - Means for cooling

34.

BRANCH PROTECTOR

      
Application Number 019137515
Status Registered
Filing Date 2025-01-30
Registration Date 2025-06-18
Owner Littelfuse, Inc. (USA)
NICE Classes  ? 09 - Scientific and electric apparatus and instruments

Goods & Services

Fuses; fuses for electrical circuits; electrical circuit switches.

35.

BRANCH PROTECTOR

      
Application Number 237677800
Status Pending
Filing Date 2025-01-29
Owner Littelfuse, Inc. (USA)
NICE Classes  ? 09 - Scientific and electric apparatus and instruments

Goods & Services

(1) Fuses; fuses for electrical circuits; electrical circuit switches

36.

THE BEAST

      
Application Number 019135079
Status Registered
Filing Date 2025-01-23
Registration Date 2025-08-15
Owner Littelfuse, Inc. (USA)
NICE Classes  ? 09 - Scientific and electric apparatus and instruments

Goods & Services

Electric current devices, namely, instruments for distributing electric current, including switches and power transistors.

37.

SELF-LIMITING HEATER

      
Application Number 18890908
Status Pending
Filing Date 2024-09-20
First Publication Date 2025-01-09
Owner Littelfuse, Inc. (USA)
Inventor
  • Fesshaie, Efrem
  • Kabisius, Paulius
  • Chen, Jianhua
  • Misevicius, Rimantas

Abstract

A self-limiting heater and method for building the self-limiting heater are disclosed. The self-limiting heater consists of a resistor and a PTC resistor coupled together in series with a power supply. Both resistive devices have good thermal coupling. The resistor has a low temperature coefficient while the resistance of the PTC resistor increases with an increase in temperature. The ohmic resistance ratio between the resistor and the PTC may be used to adjust the heater characteristics and limit the characteristic sharpness.

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
  • H05B 3/00 - Ohmic-resistance heating

38.

ULTRA-THIN WELDABLE FUSE

      
Application Number 18741960
Status Pending
Filing Date 2024-06-13
First Publication Date 2024-12-26
Owner Littelfuse, Inc. (USA)
Inventor
  • Rosios, Maria Lily Espenilla
  • Johler, Werner
  • Enriquez, Albert V.
  • Ramos, Arnel Alibuyog

Abstract

Disclosed are various protection devices and associated methods. In some embodiments, a protection device may include a substrate, and a fusible element extending between a first terminal and a second terminal, wherein the fusible element, the first terminal, and the second terminal are coupled to the substrate. The protection device may further include a cover formed over the fusible element, wherein the fusible element is positioned between the cover and the substrate.

IPC Classes  ?

  • H01H 85/17 - Casings characterised by the casing material
  • H01H 85/06 - Fusible members characterised by the fusible material
  • H01H 85/20 - Bases for supporting the fuseSeparate parts thereof

39.

PPTC SMALL PLANAR SMD TEMPERATURE SENSORS AND OVERCURRENT DEVICES

      
Application Number 18668345
Status Pending
Filing Date 2024-05-20
First Publication Date 2024-11-28
Owner Littelfuse, Inc. (USA)
Inventor
  • Pineda, Martin G.
  • Doms, Marco
  • Godinez, Sergio Fuentes
  • Shenoy, Arjuna
  • Oyewole, Oluwaseun K.

Abstract

A device assembly for surface mount devices includes a matrix of SMD skeletons and a polymeric positive temperature coefficient (PPTC) material disposed over the matrix. The matrix consists of multiple rows, with each SMD skeleton having a pair of terminals and multiple whiskers perpendicular to and between the terminals. The PPTC material connects the terminals to the whiskers.

IPC Classes  ?

  • H05K 1/11 - Printed elements for providing electric connections to or between printed circuits
  • G01K 7/22 - 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
  • H05K 1/18 - Printed circuits structurally associated with non-printed electric components
  • H05K 3/40 - Forming printed elements for providing electric connections to or between printed circuits

40.

LEADFRAMELESS ELECTRICALLY ISOLATED POWER SEMICONDUCTOR PACKAGE

      
Application Number 18200853
Status Pending
Filing Date 2023-05-23
First Publication Date 2024-11-28
Owner Littelfuse, Inc. (USA)
Inventor
  • Maldo, Tiburcio
  • Ebido, Robert
  • Deveza, Arnel
  • Grozen, Jeff
  • Cadut, Roger

Abstract

A lead-free power semiconductor package (PSP) includes a substrate, multiple copper leads, a die, and an encapsulant. The substrate has alternating layers of copper and silicon nitride. The copper leads, which are not part of a leadframe, are connected to the substrate using active metal brazing. The die, which contains circuitry to allow the PSP to operate, is connected to the substrate using silver sintered paste. The encapsulant encases the substrate and the die with a portion of the multiple leads being outside the encapsulant.

IPC Classes  ?

  • H01L 23/498 - Leads on insulating substrates
  • H01L 21/56 - Encapsulations, e.g. encapsulating layers, coatings
  • H01L 23/00 - Details of semiconductor or other solid state devices
  • H01L 23/373 - Cooling facilitated by selection of materials for the device

41.

PTC HEATER WITH IMPROVED TEMPERATURE DISTRIBUTION AND UNIFORMITY

      
Application Number 18655587
Status Pending
Filing Date 2024-05-06
First Publication Date 2024-11-21
Owner Littelfuse, Inc. (USA)
Inventor
  • Wang, Jun Gang
  • Tian, Yu
  • Ku, Chihao
  • Chen, Sky

Abstract

A positive temperature coefficient (PTC) heater including a PTC layer formed of a material exhibiting a non-linear change in resistance in response to changes in temperature, an electrode layer including first and second electrodes disposed atop the PTC layer, each of the first and second electrodes including a spine and a plurality of tines extending inwardly therefrom, with the spine of the first electrode oriented parallel to the spine of the second electrode and with the tines of the first electrode disposed in an interdigitated relationship with the tines of the second electrode, an adhesive layer including first and second adhesive strips disposed atop the spines of the first and second electrodes, respectively, and a busbar layer including first and second busbars disposed atop the first and second adhesive strips, respectively, and adhered to the spines of the first and second electrodes by the first and second adhesive strips, respectively.

IPC Classes  ?

  • H05B 3/14 - Heating elements characterised by the composition or nature of the materials or by the arrangement of the conductor characterised by the composition or nature of the conductive material the material being non-metallic
  • H05B 3/03 - Electrodes

42.

INTEGRATED HETEROGENEOUS THERMISTOR ARRANGEMENT FOR HIGH VOLTAGE PRE-CHARGE CIRCUIT

      
Application Number 18651881
Status Pending
Filing Date 2024-05-01
First Publication Date 2024-11-07
Owner Littelfuse, Inc. (USA)
Inventor
  • Guo, Tao
  • Poo, Tongkiang
  • Chen, Jianhua
  • Chen, Sky

Abstract

A pre-charge circuit. The precharge circuit may include a switching device for controlling a voltage to be supplied to a battery; and a heterogeneous thermistor circuit, coupled to the switching device. The heterogeneous thermistor circuit may include a negative temperature coefficient (NTC) component; and a polymer positive temperature coefficient (PPTC) component, arranged in electrical series with the NTC component and the switching device.

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
  • H01C 7/04 - 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 negative temperature coefficient
  • H01M 10/42 - Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
  • H02H 9/02 - Emergency protective circuit arrangements for limiting excess current or voltage without disconnection responsive to excess current

43.

OVERCURRENT PROTECTION BASED ON SLOPE DETECTION

      
Application Number 18644373
Status Pending
Filing Date 2024-04-24
First Publication Date 2024-10-31
Owner Littelfuse, Inc. (USA)
Inventor
  • Martinez, Cesar
  • Golubovic, Boris
  • Gambuzza, Michael
  • Zatorre, Guillermo

Abstract

Disclosed is a control circuit, for use in a solid state battery disconnect and protection system, wherein control circuit includes a high-voltage switch coupled between an electric battery and a DC link capacitor of an electric vehicle, wherein the electric vehicle is powered by the electric battery, and a control block. The control block may by operable to monitor a rate of change and a value of a current on a connection to the high-voltage switch, determine whether the rate of change of the current exceeds a first predetermined threshold and determine whether the value of the current exceeds a second predetermined threshold, and determine an overcurrent fault exists in the case that the first or second predetermined threshold is exceeded.

IPC Classes  ?

  • H02H 7/18 - Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for batteriesEmergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for accumulators
  • H02H 1/00 - Details of emergency protective circuit arrangements

44.

PRE-CHARGE SHORT CIRCUIT DETECTION

      
Application Number 18644289
Status Pending
Filing Date 2024-04-24
First Publication Date 2024-10-31
Owner Littelfuse, Inc. (USA)
Inventor
  • Gambuzza, Michael
  • Zatorre, Guillermo
  • Golubovic, Boris
  • Martinez, Cesar

Abstract

Disclosed is an adaptive pre-charge control circuit, for use in a solid state battery disconnect and protection system, wherein the adaptive pre-charge control circuit includes a high-voltage switch coupled between an electric battery and a DC link capacitor of an electric vehicle, and wherein the electric vehicle is powered by the electric battery. The control circuit may be operable to issue a pulse width modulated (PWM) signal to generate a current profile wherein every other pulse exceeds a predefined limit, monitor, during pre-charging, the current profile, and to determine an overcurrent fault exists in the case that two consecutive pulses exceed the predefined limit.

IPC Classes  ?

  • H02H 7/18 - Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for batteriesEmergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for accumulators
  • H02H 1/00 - Details of emergency protective circuit arrangements

45.

ELECTRICALLY ISOLATED DISCRETE PACKAGE WITH HIGH PERFORMANCE CERAMIC SUBSTRATE

      
Application Number 18141118
Status Pending
Filing Date 2023-04-28
First Publication Date 2024-10-31
Owner Littelfuse, Inc. (USA)
Inventor
  • Bhatt, Aalok
  • Perraud, Francois
  • Selke, Cynthia
  • Hughes, Rhodri
  • Maldo, Tiburcio

Abstract

A substrate package arrangement may include a substrate that contains a ceramic body, a top metal layer, disposed on a top side of the ceramic body, and a bottom metal layer, disposed on a bottom side of the ceramic body, opposite the top surface. The substrate package arrangement may further include a lead structure, electrically connected to the top metal layer, and being electrically isolated from the bottom metal layer, wherein the substrate and lead structure are arranged in a discrete package, and wherein the ceramic body is formed of a high thermal conductivity material.

IPC Classes  ?

  • H01L 23/373 - Cooling facilitated by selection of materials for the device
  • H01L 23/31 - Encapsulation, e.g. encapsulating layers, coatings characterised by the arrangement

46.

METHOD TO CONNECT POWER TERMINAL TO SUBSTRATE WITHIN SEMICONDUCTOR PACKAGE

      
Application Number 18136554
Status Pending
Filing Date 2023-04-19
First Publication Date 2024-10-24
Owner Littelfuse, Inc. (USA)
Inventor
  • Spann, Thomas
  • Arjmand, Elaheh

Abstract

A method of manufacturing a power semiconductor device in accordance with an embodiment of the present disclosure may include providing a substrate disposed atop a heatsink, electrically connecting a semiconductor die to a top surface of the substrate, disposing a thin metallic layer atop the substrate, disposing a terminal atop the thin metallic layer, and performing a welding operation wherein a laser beam is directed at a top surface of the terminal to produce a plurality of weld connections connecting the terminal to the substrate, wherein the weld connections are separated by gaps, and wherein heat generated during the welding operation melts the thin metallic layer and molten material of the thin metallic flows into the gaps.

IPC Classes  ?

  • H01L 23/498 - Leads on insulating substrates
  • H01L 21/56 - Encapsulations, e.g. encapsulating layers, coatings
  • H01L 23/29 - Encapsulation, e.g. encapsulating layers, coatings characterised by the material
  • H01L 23/31 - Encapsulation, e.g. encapsulating layers, coatings characterised by the arrangement
  • H01L 23/373 - Cooling facilitated by selection of materials for the device

47.

REVERSE BLOCKING INSULATED-GATE BIPOLAR TRANSISTOR

      
Application Number 18131439
Status Pending
Filing Date 2023-04-06
First Publication Date 2024-10-10
Owner Littelfuse, Inc. (USA)
Inventor Waind, Peter

Abstract

Methods for making reverse-blocking insulated gate bipolar transistors and associated structures. A first and a second silicon wafer substrates are provided and bonded. One or more separation diffusion regions are formed in the first silicon wafer substrate. One or more front side metal-oxide semiconductor (MOS) structures are formed on a top surface of the first silicon wafer substrate. The second silicon wafer substrate layer is removed. A contact diffusion layer is formed on a bottom surface of the first silicon wafer substrate. A backside metallization layer is formed on a bottom surface of the contact diffusion layer.

IPC Classes  ?

  • H01L 29/66 - Types of semiconductor device
  • H01L 21/8249 - Bipolar and MOS technology
  • H01L 29/06 - Semiconductor bodies characterised by the shapes, relative sizes, or dispositions of the semiconductor regions
  • H01L 29/08 - Semiconductor bodies characterised by the shapes, relative sizes, or dispositions of the semiconductor regions with semiconductor regions connected to an electrode carrying current to be rectified, amplified, or switched and such electrode being part of a semiconductor device which comprises three or more electrodes
  • H01L 29/739 - Transistor-type devices, i.e. able to continuously respond to applied control signals controlled by field effect

48.

HYBRID CONDUCTIVE PASTE FOR FAST-OPENING, LOW-RATING FUSES

      
Application Number 18433822
Status Pending
Filing Date 2024-02-06
First Publication Date 2024-08-15
Owner Littelfuse, Inc. (USA)
Inventor
  • Talebinezhad, Hossein
  • Chen, Jianhua J.
  • Tabell, Victor Oliver

Abstract

Provided herein a circuit protection devices including a fusible element attached to a ceramic substrate, the fusible element comprising a paste including a plurality of nickel particles.

IPC Classes  ?

  • H01H 85/06 - Fusible members characterised by the fusible material
  • H01H 69/02 - Manufacture of fuses
  • H01H 85/0445 - General constructions or structure of low voltage fuses, i.e. below 1,000 V, or of fuses where the applicable voltage is not specified fast or slow type

49.

High thermal conductivity fuse holder

      
Application Number 18107849
Grant Number 12176168
Status In Force
Filing Date 2023-02-09
First Publication Date 2024-08-15
Grant Date 2024-12-24
Owner Littelfuse, Inc. (USA)
Inventor Guerrero, Juan Antonio

Abstract

A fuse holder includes a housing and a knob. The housing has a telescoping chamber designed to receive a knob terminal, where the knob terminal is adapted to receive a fuse. The knob has a neck which is inserted into the telescoping chamber to enclose the cylindrical fuse. The housing and neck are made of a polymer having a thermal conductivity in a range of 4.0 to 10 W/mK.

IPC Classes  ?

50.

THE BEAST

      
Serial Number 98696093
Status Pending
Filing Date 2024-08-13
Owner Littelfuse, Inc. ()
NICE Classes  ? 09 - Scientific and electric apparatus and instruments

Goods & Services

electric current control devices, including, switches and power transistors

51.

GRADIENT BRIDGE CROSS-SECTION FOR IMPROVED THERMAL & OSR FUSE PERFORMANCE

      
Application Number 18433857
Status Pending
Filing Date 2024-02-06
First Publication Date 2024-08-08
Owner LITTELFUSE, INC. (USA)
Inventor
  • Faust, Scott
  • Jones, Christopher H.

Abstract

A fuse element includes a bridge assembly located adjacent one side of a center portion. The bridge assembly includes multiple bridges connected to a fuse terminal. Each bridge has a cross-sectional area different from each other bridge. A first bridge is adjacent the center portion and has a first cross-sectional area. A last bridge is adjacent the fuse terminal and has a second cross-sectional area greater than the first cross-sectional area.

IPC Classes  ?

  • H01H 85/08 - Fusible members characterised by the shape or form of the fusible member

52.

BRANCH PROTECTOR

      
Serial Number 98685180
Status Pending
Filing Date 2024-08-06
Owner Littelfuse, Inc. ()
NICE Classes  ? 09 - Scientific and electric apparatus and instruments

Goods & Services

Fuses; fuses for electrical circuits; electrical circuit switches

53.

CURRENT SENSOR WITH DIAGNOSTIC FEATURE

      
Application Number 18413169
Status Pending
Filing Date 2024-01-16
First Publication Date 2024-07-18
Owner
  • Littelfuse, Inc. (USA)
  • LITTELFUSE, INC. (USA)
Inventor
  • Golubovic, Boris
  • Zatorre, Guillermo
  • Martinez, Cesar

Abstract

Provided herein are approaches for improving performance of current sensors. In some embodiments, an apparatus may include a current sensor coupled to a busbar, the current sensor comprising a coil, wherein a current flowing through the busbar generates a first magnetic field detectable by the current sensor, wherein the coil is operable to generate a second magnetic field, and wherein by orienting the coil, the current sensor will receive part of the second magnetic field, superposed to the first magnetic field.

IPC Classes  ?

  • G01R 19/00 - Arrangements for measuring currents or voltages or for indicating presence or sign thereof
  • G01R 15/20 - Adaptations providing voltage or current isolation, e.g. for high-voltage or high-current networks using galvano-magnetic devices, e.g. Hall-effect devices

54.

Adaptive pre-charge control for electric vehicle DC link capacitor

      
Application Number 17971915
Grant Number 12370916
Status In Force
Filing Date 2022-10-24
First Publication Date 2024-07-11
Grant Date 2025-07-29
Owner Littelfuse, Inc. (USA)
Inventor
  • Gambuzza, Michael J.
  • Martinez, Cesar
  • Schulz, Martin

Abstract

An adaptive pre-charge control circuit includes include a high-voltage switch and a control circuit. The high-voltage switch controls the flow of current between an electric battery and a DC link capacitor, the electric battery to supply power to an electric vehicle. The DC link capacitor is made up of a sum of individual input capacitors of multiple subunits within an electric vehicle. The control circuit sends a PWM signal to the high-voltage switch based on a difference between an electric battery voltage and a DC link capacitor voltage.

IPC Classes  ?

  • B60L 53/62 - Monitoring or controlling charging stations in response to charging parameters, e.g. current, voltage or electrical charge
  • H02J 7/00 - Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
  • H02J 7/34 - Parallel operation in networks using both storage and other DC sources, e.g. providing buffering

55.

High breaking capacity fuses with metal reinforcements

      
Application Number 18073673
Grant Number 12362120
Status In Force
Filing Date 2022-12-02
First Publication Date 2024-06-06
Grant Date 2025-07-15
Owner Littelfuse, Inc. (USA)
Inventor
  • Arciaga, Marko
  • Labonite, Ralph Pechon
  • Rosios, Lily Espenilla
  • De Leon, Conrado Sagun
  • Enriquez, Albert

Abstract

A fuse includes a fuse body, two terminals, and a termination reinforcement. The fuse body surrounds a fusible element. The first terminal is located at one end of the fuse body and the second terminal is located at the other end of the fuse body. The fusible element is mechanically connected to the first and second terminals. The termination reinforcement is located at one end of the fuse body.

IPC Classes  ?

  • H01H 85/041 - Fuses, i.e. expendable parts of the protective device, e.g. cartridges characterised by the type
  • H01H 85/00 - Protective devices in which the current flows through a part of fusible material and this current is interrupted by displacement of the fusible material when this current becomes excessive
  • H01H 85/06 - Fusible members characterised by the fusible material
  • H01H 85/08 - Fusible members characterised by the shape or form of the fusible member
  • H01H 85/17 - Casings characterised by the casing material
  • H01H 85/175 - Casings characterised by the casing shape or form

56.

Fuse with arc suppressing mastic material

      
Application Number 18512741
Grant Number 12278075
Status In Force
Filing Date 2023-11-17
First Publication Date 2024-05-23
Grant Date 2025-04-15
Owner Littelfuse, Inc. (USA)
Inventor
  • Pineda, Martin G.
  • Doms, Marco
  • Godinez, Sergio Fuentes
  • Yamaoka, Toshikazu
  • Sakamoto, Satoshi
  • Takahashi, Hajime
  • Nomura, Keiichiro
  • Johler, Werner

Abstract

A fuse comprising including a housing, a fusible element disposed within the housing, first and second terminals extending from opposite ends of the fusible element and out of the housing, and a quantity of arc suppressing material disposed on the fusible element, wherein the arc suppressing material is formed of a polyamide hotmelt adhesive mixed with a flame retardant.

IPC Classes  ?

  • H01H 85/38 - Means for extinguishing or suppressing arc
  • H01H 85/06 - Fusible members characterised by the fusible material
  • H01H 85/08 - Fusible members characterised by the shape or form of the fusible member

57.

CDOT DEVICE FOR WIRELESS CHARGING

      
Application Number 17986083
Status Pending
Filing Date 2022-11-14
First Publication Date 2024-05-16
Owner Littelfuse, Inc. (USA)
Inventor
  • Matus, Yuriy Borisovich
  • Pineda, Martin G.

Abstract

A battery protection device includes a Charge/Discharge Over Temperature (CDOT) device and a wireless charging coil. The CDOT device consists of a first electrode, a second electrode, and a variable resistance material. The first electrode is located on a substrate and has a first collection of fingers. The second electrode is located on the substrate and has a second collection of fingers. The first fingers and the second fingers are disposed in an interdigitated, spaced-apart relationship with one another, resulting in a gap between them that is serpentine and tortuous. The variable resistance material changes its resistance in response to a change in temperature.

IPC Classes  ?

  • H02J 7/00 - Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
  • H01M 10/42 - Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
  • H01M 10/44 - Methods for charging or discharging
  • H02J 50/10 - Circuit arrangements or systems for wireless supply or distribution of electric power using inductive coupling

58.

TEMPERATURE SENSING TAPE HAVING A TEMPERATURE SENSOR ELEMENT WITH MULTIPLE CRYSTALLIZATION POINTS

      
Application Number US2023079147
Publication Number 2024/102851
Status In Force
Filing Date 2023-11-08
Publication Date 2024-05-16
Owner LITTELFUSE, INC. (USA)
Inventor
  • Godinez, Sergio Fuentes
  • Doms, Marco
  • Oyewole, Oluwaseun K.
  • Bhatt, Aalok
  • Perraud, Francois
  • Pineda, Martin

Abstract

A temperature sensing tape is provided and can include an insulating support structure and at least one temperature sensing element disposed on the insulating support structure wherein the at least one temperature sensing element can be formed from a single polymer mixture that includes two or more polymers, and wherein each of the two or more polymers can have a respective, different crystallinity point.

IPC Classes  ?

  • G01K 3/00 - Thermometers giving results other than momentary value of temperature
  • G01K 7/16 - Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat using resistive elements
  • G01K 11/06 - Measuring temperature based on physical or chemical changes not covered by group , , , or using melting, freezing, or softening

59.

TEMPERATURE SENSING TAPE HAVING A TEMPERATURE SENSOR ELEMENT WITH MULTIPLE CRYSTALLIZATION POINTS

      
Application Number 18504964
Status Pending
Filing Date 2023-11-08
First Publication Date 2024-05-09
Owner
  • SMITH & NEPHEW, INC. (USA)
  • LITTELFUSE, INC. (USA)
Inventor
  • Godinez, Sergio Fuentes
  • Doms, Marco
  • Oyewole, Oluwaseun K.
  • Bhatt, Aalok
  • Perraud, Francois
  • Pineda, Martin

Abstract

A temperature sensing tape is provided and can include an insulating support structure and at least one temperature sensing element disposed on the insulating support structure wherein the at least one temperature sensing element can be formed from a single polymer mixture that includes two or more polymers, and wherein each of the two or more polymers can have a respective, different crystallinity point.

IPC Classes  ?

  • H02H 1/00 - Details of emergency protective circuit arrangements
  • G01K 1/024 - Means for indicating or recording specially adapted for thermometers for remote indication
  • G01K 3/00 - Thermometers giving results other than momentary value of temperature
  • G01K 7/16 - Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat using resistive elements
  • H02H 6/00 - Emergency protective circuit arrangements responsive to undesired changes from normal non-electric working conditions using simulators of the apparatus being protected, e.g. using thermal images

60.

ISOLATED POWER PACKAGING WITH FLEXIBLE CONNECTIVITY

      
Application Number 17955877
Status Pending
Filing Date 2022-09-29
First Publication Date 2024-04-04
Owner Littelfuse, Inc. (USA)
Inventor Hughes, Rhodri

Abstract

An isolated packaging structure and methods thereof. The structure includes a housing having a top side and a bottom side. The housing encapsulates one or more electronic components. The structure also include one or more openings disposed in the bottom side of the housing. One or more openings are configured for exposing one or more metallized surfaces of one or more electronic components. One or more metallized surfaces are configured for coupling to one or more lead terminals.

IPC Classes  ?

  • H01L 23/373 - Cooling facilitated by selection of materials for the device
  • H01L 23/00 - Details of semiconductor or other solid state devices
  • H01L 23/31 - Encapsulation, e.g. encapsulating layers, coatings characterised by the arrangement
  • H01L 23/495 - Lead-frames

61.

MODULAR POWER DISTRIBUTION UNIT

      
Application Number 17953483
Status Pending
Filing Date 2022-09-27
First Publication Date 2024-03-28
Owner Littelfuse, Inc. (USA)
Inventor
  • Jozwiak, Andrew
  • Morales, Jesus Roberto

Abstract

A Power Distribution Unit (PDU) includes a cover and a base. The cover has multiple fastener receptacles and a pair of indentations located along its outer edge. The base has an opening on a short side of the PDU for receiving a cable connector and a window on a long side of the PDU, the window being secured to a second cover. The long side is perpendicular to the short side.

IPC Classes  ?

  • H02B 1/28 - CasingsParts thereof or accessories therefor dustproof, splashproof, drip-proof, waterproof or flameproof
  • H02B 1/46 - BoxesParts thereof or accessories therefor

62.

SMD fuse with pre-molded shield

      
Application Number 18099012
Grant Number 11942300
Status In Force
Filing Date 2023-01-19
First Publication Date 2024-03-26
Grant Date 2024-03-26
Owner Littelfuse, Inc. (USA)
Inventor
  • Bayer, Sheila Marie Vinas
  • Servancia, Randy Capablanca
  • Arce, Jr., Fernando Isip
  • Aberin, Edwin Canido
  • Retardo, Roel Santos
  • De Guia, Jr., Francisco Rivera

Abstract

A fuse shield features a cylindrical body, a first cap cover, a second cap cover, and a stop region. The cylindrical body is adapted to be placed over and partially surround a cylindrical fuse. The cylindrical body is sandwiched between the first and second cap covers. The stop region is located on an edge of the first cap cover to limit rotation of the cylindrical fuse to a first degree in one direction on a flat surface.

IPC Classes  ?

  • H01H 85/175 - Casings characterised by the casing shape or form
  • H01H 85/143 - Electrical contactsFastening fusible members to such contacts

63.

Contactor with integrated pyrotechnic interrupter

      
Application Number 17933695
Grant Number 12009167
Status In Force
Filing Date 2022-09-20
First Publication Date 2024-03-21
Grant Date 2024-06-11
Owner Littelfuse, Inc. (USA)
Inventor
  • Loeffelbein, Sven
  • Schwartz, Geoff

Abstract

An electrical contactor including a contactor assembly including a housing, an electromagnet coil and an electrically conductive core disposed within the housing, the core being movable relative to the coil under influence of an electromagnetic force produced by the coil, and an electrically conductive bridge connected to a lower end of the core and movable with the core, an interrupter assembly including a base located below the bridge and having a trench formed in a top surface thereof, an input bus bar and an output bus bar disposed on the base on opposing sides of the trench, and a pyrotechnic interrupter disposed within the trench. The pyrotechnic interrupter may include a plunger and pyrotechnic ignitor disposed below the plunger, wherein, when the pyrotechnic ignitor is actuated, the plunger forcibly drives the bridge away from the input bus bar and an output bus bar to break an electrical connection therebetween.

IPC Classes  ?

  • H01H 39/00 - Switching devices actuated by an explosion produced within the device and initiated by an electric current

64.

ARC QUENCHING FUSE FILLER FOR CURRENT LIMITING FUSES

      
Application Number 18031482
Status Pending
Filing Date 2020-10-26
First Publication Date 2024-03-21
Owner Littelfuse, Inc. (USA)
Inventor
  • Tsang, Chun-Kwan
  • Dietsch, Gordon Todd
  • Santos, Irma Valeriano

Abstract

A method for producing an arc quenching fuse filler including providing a conventional fuse filler material, mixing a binder agent with the conventional fuse filler material, mixing an arc quenching promotor with the conventional fuse filler material and binder agent, and curing the binder agent, whereby granules of the arc quenching promotor are bound to granules of the conventional fuse filler material.

IPC Classes  ?

65.

Protection device with wall vent for breaking capacity improvement

      
Application Number 17932724
Grant Number 11948767
Status In Force
Filing Date 2022-09-16
First Publication Date 2024-03-21
Grant Date 2024-04-02
Owner Littelfuse, Inc. (USA)
Inventor
  • Retardo, Roel Santos
  • De Leon, Conrado Sagun
  • Marquinez, Merjaycel

Abstract

Provided are circuit protection devices. In some embodiments, a protection device may include a set of leads extending though a socket body, wherein the socket body includes a first side opposite a second side, and a third side opposite a fourth side, wherein the third and fourth sides extend between the first and second sides, and wherein the third side includes a thermal vent. The protection device may further include a fusible element surrounding a central shaft, wherein the fusible element is connected with the set of leads.

IPC Classes  ?

  • H01H 85/43 - Means for exhausting or absorbing gases liberated by fusing arc, or for ventilating excess pressure generated by heating
  • H01H 85/143 - Electrical contactsFastening fusible members to such contacts
  • H01H 85/165 - Casings

66.

UNSEALED SINGLE FUSE HOLDER

      
Application Number 18370978
Status Pending
Filing Date 2023-09-21
First Publication Date 2024-03-14
Owner Littelfuse, Inc. (USA)
Inventor
  • Jozwiak, Andrew
  • Morales, Jesus Roberto

Abstract

A fuse holder includes a movable tab, a base, and a cover. A stud is affixed to the movable tab and secures a terminal of a bolt-down fuse. A second stud is affixed to the base and secures a second terminal of the bolt-down fuse. The base has a channel into which the movable tab is slidably inserted. The cover connects to the base and is located over the stud and the second stud.

IPC Classes  ?

  • H01H 85/20 - Bases for supporting the fuseSeparate parts thereof

67.

Inner chambers with blast attenuation geometry on fuses

      
Application Number 17880121
Grant Number 11984286
Status In Force
Filing Date 2022-08-03
First Publication Date 2024-02-08
Grant Date 2024-05-14
Owner LITTELFUSE, INC. (USA)
Inventor Murillo, Clemente Hernandez

Abstract

A fuse includes multiple stacked layers, a first terminal, and a second terminal. The first terminal is connected to one end of a fusible element and the second terminal is connected to the other end. The stacked layers include first and second intermediate layers and a special layer. The first intermediate layer, which has a centrally disposed opening, is stacked on the first terminal and the second terminal. The second intermediate layer, also having a centrally disposed opening is stacked above the first intermediate layer, and the centrally disposed openings define a chamber above the fusible element. The special layer is located between the first intermediate layer and the second intermediate layer and includes one or more geometric elements. The geometric elements divide the chamber into two sub-chambers, the first sub-chamber being above the second sub-chamber.

IPC Classes  ?

  • H01H 85/175 - Casings characterised by the casing shape or form
  • H01H 85/17 - Casings characterised by the casing material
  • H01H 85/041 - Fuses, i.e. expendable parts of the protective device, e.g. cartridges characterised by the type

68.

Power substrate assembly with reduced warpage

      
Application Number 17864881
Grant Number 12308338
Status In Force
Filing Date 2022-07-14
First Publication Date 2024-01-18
Grant Date 2025-05-20
Owner Littelfuse, Inc. (USA)
Inventor
  • Maldo, Tiburcio A.
  • Hughes, Rhodri
  • Ebido, Robert
  • Grozen, Jeff
  • Chua, Josef Colquin A.
  • Atienza, Jr., Domingo

Abstract

A substrate assembly may include a power substrate, a chip, a clip, and a trimetal. The power substrate has a first direct copper bonded (DCB) surface connected to a ceramic tile. The chip is soldered onto the first DCB surface. The clip is attached to the power substrate and has a foot at one end and a recessed area at the other, opposite end. The foot is connected to the power substrate. The trimetal has a base, a trapezoid structure, and a clip portion. The base is soldered to the chip. The trapezoid structure is located above the base. The clip portion is located above the trapezoid structure and includes a projecting area. The recessed area of the clip fits into the projecting area of the trimetal.

IPC Classes  ?

  • H01L 23/00 - Details of semiconductor or other solid state devices
  • H01L 23/14 - Mountings, e.g. non-detachable insulating substrates characterised by the material or its electrical properties
  • H01L 23/15 - Ceramic or glass substrates

69.

Active/passive fuse module

      
Application Number 18198016
Grant Number 12308194
Status In Force
Filing Date 2023-05-16
First Publication Date 2024-01-18
Grant Date 2025-05-20
Owner Littelfuse, Inc. (USA)
Inventor
  • Hetzmannseder, Engelbert
  • Lasini, Derek
  • Burns, David Arthur

Abstract

An active/passive fuse module including a fuse having an electrically insulating fuse body, first and second endcaps disposed on opposing ends of the fuse body, a fusible element extending through the fuse body between the first endcap and the second endcap, and an arc quenching material disposed within the fuse body and surrounding the fusible element. The fuse module further includes a pyrotechnic interrupter (PI) coupled to the fuse body, the PI having a housing defining a shaft, a piston disposed within the shaft, a drive pin extending from the piston into the fuse body, the drive pin terminating in a cutter disposed adjacent the fusible element, and a pyrotechnic ignitor disposed within the shaft above the piston configured to detonate upon receiving an initiation signal from a controller, whereby the piston and the drive pin are forcibly driven through the shaft causing the cutter to separate the fusible element.

IPC Classes  ?

  • H01H 39/00 - Switching devices actuated by an explosion produced within the device and initiated by an electric current
  • H01H 85/08 - Fusible members characterised by the shape or form of the fusible member
  • H01H 85/18 - Casing fillings, e.g. powder
  • H01H 85/38 - Means for extinguishing or suppressing arc

70.

SOLDERLESS AND PRESSURE CONTACT CONNECTION

      
Application Number 17862692
Status Pending
Filing Date 2022-07-12
First Publication Date 2024-01-18
Owner Littelfuse, Inc. (USA)
Inventor
  • Maldo, Tiburcio A.
  • Hughes, Rodri
  • Ebido, Robert
  • Grozen, Jeff
  • Chua, Josef Colquin A.
  • Atienza, Jr., Domingo

Abstract

A pressure contact assembly includes a power substrate, a chip, and a lead. The power substrate has a surface connected to a ceramic tile and a cavity. The chip is soldered to the surface. The lead is to be inserted into the cavity and has a top portion to connect to an external device and a bottom portion to fit into the cavity.

IPC Classes  ?

71.

HIGH RELIABILITY SEMICONDUCTOR PACKAGE DESIGN

      
Application Number 17861675
Status Pending
Filing Date 2022-07-11
First Publication Date 2024-01-11
Owner Littelfuse, Inc. (USA)
Inventor Spann, Thomas

Abstract

A power semiconductor device package. The package may include a baseplate that has a plurality of through holes. The package may also include an insulating body, affixed to a top side of the baseplate The insulating body may include a main portion, to enclose a set of semiconductor devices therein, and a plurality of locking structures, the plurality of locking structures disposed along a lower periphery of the main portion, and integrally formed within the insulating body, wherein the plurality of locking structures extend through the baseplate.

IPC Classes  ?

  • H01L 23/31 - Encapsulation, e.g. encapsulating layers, coatings characterised by the arrangement
  • H01L 23/492 - Bases or plates
  • H01L 23/40 - Mountings or securing means for detachable cooling or heating arrangements
  • H01L 21/56 - Encapsulations, e.g. encapsulating layers, coatings

72.

Step-terminated SMD fuse

      
Application Number 17846796
Grant Number 11923162
Status In Force
Filing Date 2022-06-22
First Publication Date 2023-12-28
Grant Date 2024-03-05
Owner LITTELFUSE, INC. (USA)
Inventor
  • Retardo, Roel Santos
  • Berenguel, Kent Harvey Mercado
  • Dela Torre, P-A-Homer Ii

Abstract

A fuse includes a stack, a flattened wire, and a terminal. The stack has multiple layers arranged to form steps. The stack has an upper stack with layers of a first size and a lower stack with layers of a second, larger size. The flattened wire is located between the upper stack and the lower stack. The terminal is connected to the flattened wire and includes multiple surfaces to cover the steps at one end of the stack.

IPC Classes  ?

  • H01H 85/143 - Electrical contactsFastening fusible members to such contacts
  • H01H 85/055 - Fusible members
  • H01H 85/041 - Fuses, i.e. expendable parts of the protective device, e.g. cartridges characterised by the type

73.

2PRO

      
Application Number 018960812
Status Registered
Filing Date 2023-12-07
Registration Date 2024-04-24
Owner Littelfuse, Inc. (USA)
NICE Classes  ? 09 - Scientific and electric apparatus and instruments

Goods & Services

Circuit protection devices.

74.

Thin film coating packaging for device having meltable and wetting links

      
Application Number 18233394
Grant Number 12334292
Status In Force
Filing Date 2023-08-14
First Publication Date 2023-11-30
Grant Date 2025-06-17
Owner Littelfuse, Inc. (USA)
Inventor
  • Matus, Yuriy Borisovich
  • Pineda, Martin G.
  • Golubovic, Boris
  • Nayar, Deepak

Abstract

A method for creating a dielectric thin-film coating for devices having a fusible element is disclosed. The method comprises mixing insoluble and soluble polymers in solid form and exposing the mixture to heat to create a melt mixture. The melt mixture is then dissolved in a solvent to create a slurry which can then be deposited on the device as a thin-film coating to create an interior insulation layer or an external surface.

IPC Classes  ?

  • H01H 85/046 - Fuses formed as printed circuits
  • H01H 85/143 - Electrical contactsFastening fusible members to such contacts
  • H01H 85/38 - Means for extinguishing or suppressing arc

75.

Arrayed element design for chip fuse

      
Application Number 17749941
Grant Number 12046436
Status In Force
Filing Date 2022-05-20
First Publication Date 2023-11-23
Grant Date 2024-07-23
Owner Littelfuse, Inc. (USA)
Inventor
  • Tabell, Victor Oliver L.
  • Enriquez, Albert
  • Patel, Timothy

Abstract

A chip fuse includes a first terminal disposed on a first end of a fuse element array and a second terminal disposed on a second end of the fuse element array opposite the first end. The fuse element array includes multiple layers disposed in a stacked arrangement, each layer including a first terminal portion disposed within the first terminal, a second terminal portion disposed within the second terminal, a first fuse element portion orthogonal to and extending between the first terminal portion and the second terminal portion, and a second fuse element portion orthogonal to and extending between the first terminal portion and the second terminal portion. The first fuse element portion is adjacent the second fuse element portion.

IPC Classes  ?

  • H01H 85/12 - Two or more separate fusible members in parallel
  • H01H 85/041 - Fuses, i.e. expendable parts of the protective device, e.g. cartridges characterised by the type

76.

Unsealed single fuse holder

      
Application Number 17942575
Grant Number 11817284
Status In Force
Filing Date 2022-09-12
First Publication Date 2023-11-14
Grant Date 2023-11-14
Owner Littelfuse, Inc. (USA)
Inventor
  • Jozwiak, Andrew
  • Morales, Jesus Roberto

Abstract

A fuse holder includes a movable tab, a base, and a cover. A stud is affixed to the movable tab and secures a terminal of a bolt-down fuse. A second stud is affixed to the base and secures a second terminal of the bolt-down fuse. The base has a channel into which the movable tab is slidably inserted. The cover connects to the base and is located over the stud and the second stud.

IPC Classes  ?

  • H01H 85/22 - Intermediate or auxiliary parts for carrying, holding, or retaining fuse, co-operating with base or fixed holder, and removable therefrom for renewing the fuse
  • H01H 85/20 - Bases for supporting the fuseSeparate parts thereof

77.

Solid state relay harvesting power from load by measuring zero crossing

      
Application Number 18202372
Grant Number 12063032
Status In Force
Filing Date 2023-05-26
First Publication Date 2023-11-09
Grant Date 2024-08-13
Owner Littelfuse, Inc. (USA)
Inventor Howe, Bret R.

Abstract

A relay circuit, including a solid state relay switch, connected to a first relay line and to a charging capacitor, and connected to a second relay line. The relay circuit may also include a solid state relay control circuit, coupled between the charging capacitor and the solid state relay switch. The solid state relay control circuit may include a voltage detection circuit, having an input coupled to an output of the charging capacitor, and having an output arranged to generate a LOW voltage signal when a voltage level of the charging capacitor is below a low threshold value. The solid state relay control circuit may also include a zero crossing circuit, coupled to the first relay line and the second relay line, and having an output to generate a clock signal when a zero crossing event takes place between the first relay line and the second relay line.

IPC Classes  ?

  • H03K 17/13 - Modifications for switching at zero crossing
  • H03K 3/037 - Bistable circuits
  • H03K 19/20 - Logic circuits, i.e. having at least two inputs acting on one outputInverting circuits characterised by logic function, e.g. AND, OR, NOR, NOT circuits

78.

Solid state relay harvesting power from load by measuring stored energy

      
Application Number 17735639
Grant Number 11881849
Status In Force
Filing Date 2022-05-03
First Publication Date 2023-11-09
Grant Date 2024-01-23
Owner Littelfuse, Inc. (USA)
Inventor Howe, Bret R.

Abstract

A relay circuit may include a solid state relay switch, coupled to an external voltage line and to an charging capacitor; and a solid state relay control circuit, coupled between the charging capacitor and the solid state relay switch. The solid state relay control circuit may be arranged to: turn the solid state relay switch to an OFF state when a capacitor voltage of the charging capacitor falls below a low threshold value; and change the solid state relay switch from the OFF state to an ON state when the capacitor voltage increases above a high threshold value.

IPC Classes  ?

  • H03K 17/687 - Electronic switching or gating, i.e. not by contact-making and -breaking characterised by the use of specified components by the use, as active elements, of semiconductor devices the devices being field-effect transistors
  • H01H 47/00 - Circuit arrangements not adapted to a particular application of the relay and designed to obtain desired operating characteristics or to provide energising current
  • H02H 3/08 - 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
  • H02H 3/10 - 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 additionally responsive to some other abnormal electrical conditions
  • H02H 3/20 - 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 voltage
  • H03K 17/06 - Modifications for ensuring a fully conducting state
  • H03K 19/20 - Logic circuits, i.e. having at least two inputs acting on one outputInverting circuits characterised by logic function, e.g. AND, OR, NOR, NOT circuits

79.

High breaking capacity fuse with fire-extinguishing pads

      
Application Number 17944797
Grant Number 11804351
Status In Force
Filing Date 2022-09-14
First Publication Date 2023-10-31
Grant Date 2023-10-31
Owner Littelfuse, Inc. (USA)
Inventor Arciaga, Marko

Abstract

A high breaking capacity fuse including an electrically insulating fuse body, a fusible element extending through the fuse body, an electrically conductive first terminal connected to a first end of the fusible element, an electrically conductive second terminal connected to a second end of the fusible element, and a first fire extinguishing pad and a second fire extinguishing disposed within the fuse body and sandwiching the fusible element therebetween, each of the first and second fire extinguishing pads formed of a polymeric substrate and a plurality of microcapsules embedded in the polymeric substrate, the plurality of microcapsules filled with an arc-quenching liquid.

IPC Classes  ?

  • H01H 85/40 - Means for extinguishing or suppressing arc using an arc-extinguishing liquid
  • H01H 85/04 - Fuses, i.e. expendable parts of the protective device, e.g. cartridges
  • H01H 85/143 - Electrical contactsFastening fusible members to such contacts
  • H01H 85/38 - Means for extinguishing or suppressing arc

80.

Fuse body with notched ends

      
Application Number 17873407
Grant Number 11804353
Status In Force
Filing Date 2022-07-26
First Publication Date 2023-10-31
Grant Date 2023-10-31
Owner Littelfuse, Inc. (USA)
Inventor
  • Silvederio, Edwin Nery
  • Arce, Jr., Fernando Isip
  • De Guia, Jr., Francisco Rivera
  • Lian, Mark Joseph

Abstract

A fuse including a fuse body having first and second end faces at opposing first and second longitudinal ends thereof, each of the first and second end faces having at least one notch formed therein, a fusible element extending through the fuse body and having a first end bent over the first end face and disposed within the at least one notch in the first end face and a second end bent over the second end face and disposed within the at least one notch in the second end face, and a first endcap disposed on the first longitudinal end of the fuse body and a second endcap disposed on the second longitudinal end of the fuse body, wherein the first and second endcaps flatly abut the first and second end faces without interference from the fusible element.

IPC Classes  ?

81.

Fuse assembly using coated wound wire and sacrificial core

      
Application Number 18136576
Grant Number 12211660
Status In Force
Filing Date 2023-04-19
First Publication Date 2023-10-26
Grant Date 2025-01-28
Owner Littelfuse, Inc. (USA)
Inventor
  • Brosas, Keon Mayson
  • Arciaga, Marko
  • Tabell, Victor Oliver
  • Chua, Irian A.

Abstract

A fuse assembly includes a housing and a wound wire operable as a fusible element. The housing has a cavity for the fusible element. The fusible element is formed by coating a wire with enamel and wrapping the wire around a core to produce enamel-coated wound wire. The enamel-coated wound wire is attached to the housing. The core is etched away until the core is dissolved and the enamel is stripped away.

IPC Classes  ?

  • H01H 69/02 - Manufacture of fuses
  • H01H 85/06 - Fusible members characterised by the fusible material
  • H01H 85/08 - Fusible members characterised by the shape or form of the fusible member

82.

LOW RESISTANCE, HIGH VOLTAGE AND RESISTANCE STABLE PPTC MATERIAL AND MANUFACTURING

      
Application Number 18137576
Status Pending
Filing Date 2023-04-21
First Publication Date 2023-10-26
Owner LITTELFUSE, INC. (USA)
Inventor
  • Zhou, Zhiyong
  • Chen, Jianhua
  • Zheng, Wilson

Abstract

A novel polymer positive temperature coefficient (PPTC) material, device, and method of fabrication. The PPTC device may include a PPTC body; a first electrode disposed on a first surface of the PPTC body and a second electrode disposed on a second surface of the PPTC body, opposite the first electrode. The PPTC body may include a polymer matrix; and a conductive filler, disposed in the polymer matrix. The conductive filler may include a tungsten carbide component comprising at least 30 volume percent of the PPTC body; and a carbon component, wherein a total volume fraction of the conductive filler comprises between forty volume percent and sixty five volume percent of the PPTC body.

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
  • H02H 9/02 - Emergency protective circuit arrangements for limiting excess current or voltage without disconnection responsive to excess current
  • H01C 1/14 - Terminals or tapping points specially adapted for resistorsArrangements of terminals or tapping points on resistors

83.

Fuse with compartmentalized body and parallel fuse elements

      
Application Number 17723910
Grant Number 11749483
Status In Force
Filing Date 2022-04-19
First Publication Date 2023-09-05
Grant Date 2023-09-05
Owner Littelfuse, Inc. (USA)
Inventor
  • Rosios, Lily Espenilla
  • Labonite, Ralph Pechon
  • Ramos, Arnel Alibuyog

Abstract

A fuse including a fuse body having a base with a central portion and first and second sidewalls, the central portion having first and second fastening holes formed therethrough, a mid-body disposed atop the central portion and having first and second troughs formed in a top surface thereof and separated by a partition wall, the mid-body further having first and second through holes formed therethrough, and a cover disposed atop the mid-body and having a central portion and first and second sidewalls, the central portion having first and second fastening bosses extending therefrom and through the first and second through holes of the mid-body and the first and second fastening holes of the base, and a conductive portion including first and second terminal portions connected by parallel first and second fuse members disposed within the first and second troughs of the mid-body and separated by the partition wall.

IPC Classes  ?

  • H01H 85/175 - Casings characterised by the casing shape or form
  • H01H 85/165 - Casings
  • H01H 85/20 - Bases for supporting the fuseSeparate parts thereof
  • H01H 85/42 - Means for extinguishing or suppressing arc using an arc-extinguishing gas
  • H01H 85/12 - Two or more separate fusible members in parallel
  • H01H 85/041 - Fuses, i.e. expendable parts of the protective device, e.g. cartridges characterised by the type

84.

BATTERY MASTER DISCONNECT SWITCH WITH INTEGRATED VOLTAGE INDICATOR

      
Application Number 18112032
Status Pending
Filing Date 2023-02-21
First Publication Date 2023-08-24
Owner LITTELFUSE, INC. (USA)
Inventor
  • Dehorn, David P.
  • Mcdonnell, Sean
  • Stuckman, Brian

Abstract

A battery master disconnect switch includes a front panel and a back panel. The front panel has a selector knob for selecting between multiple positions. The back panel has a primary terminal, a secondary terminal, and an auxiliary terminal. The primary terminal is for connection, using a first cable, to a primary battery. The secondary terminal is for connection, using a second cable, to a secondary battery. The auxiliary terminal is for enabling a device. The device receives power for any of the positions of the selector knob. The battery master disconnect switch can present a voltage for the primary, the secondary, or both the primary and secondary batteries.

IPC Classes  ?

  • H01H 19/14 - Operating parts, e.g. turn knob
  • H01M 10/48 - Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte
  • H01M 10/42 - Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells

85.

STUD ASSEMBLY

      
Application Number 17669518
Status Pending
Filing Date 2022-02-11
First Publication Date 2023-08-17
Owner Littelfuse, Inc. (USA)
Inventor Mantoan, Davide

Abstract

A stud assembly is assembled by inserting a sphere into a cavity of a stud, where the cavity is cylindrical in shape, inserting a neck of a rivet into the cavity until the neck touches the sphere, and press-fitting the rivet into the cavity until the neck melds with the sphere.

IPC Classes  ?

  • F16B 19/10 - Hollow rivetsMulti-part rivets fastened by expanding mechanically

86.

Automobile rain and temperature sensor module comprising a compound providing a thermally conductive medium between the cover of a housing and a temperature sensing element

      
Application Number 18136521
Grant Number 11884247
Status In Force
Filing Date 2023-04-19
First Publication Date 2023-08-10
Grant Date 2024-01-30
Owner Littelfuse, Inc. (USA)
Inventor
  • Ketlerius, Mindaugas
  • Rasiulis, Mangirdas
  • Alisauskas, Paulius

Abstract

A rain and temperature sensing module including a housing having a cover plate formed of a transparent material, a printed circuit board disposed within the housing and having a light emitter, a light receiver, and a temperature sensing element disposed thereon, a transparent compound disposed within the housing and covering the light emitter, the light receiver, and the temperature sensing element, the transparent compound filling a space between the printed circuit board and the cover plate, wherein the transparent compound has a refractive index that is substantially equal to a refractive index of the cover plate, and wherein the transparent compound provides a thermally conductive medium between the cover plate and the temperature sensing element.

IPC Classes  ?

  • B60S 1/08 - Wipers or the like, e.g. scrapers characterised by the drive electrically driven
  • B60R 11/00 - Arrangements for holding or mounting articles, not otherwise provided for
  • G01K 7/02 - Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat using thermoelectric elements, e.g. thermocouples
  • G01K 7/16 - Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat using resistive elements
  • G01K 13/00 - Thermometers specially adapted for specific purposes

87.

THERMAL PROTECTION DEVICE TO WITHSTAND HIGH VOLTAGE

      
Application Number 18101357
Status Pending
Filing Date 2023-01-25
First Publication Date 2023-08-03
Owner Littelfuse, Inc. (USA)
Inventor
  • Yamaoka, Toshikazu
  • Mizukami, Yohei
  • Chen, Jianhua
  • Johler, Werner

Abstract

A thermal protection device, comprising: a first PTC device, arranged in a PTC circuit, and having a first input side, coupled to an input path of the PTC circuit, and having a first output side, coupled to an output path of the PTC circuit; a second PTC device, arranged in the PTC circuit, and having a second input side, coupled to the input path of the PTC circuit, and having a second output side, coupled to the output path of the PTC circuit; and a thermal link having a third input side, coupled to the first output side of the first PTC device and the second output side of the second PTC device, via the output path of the PTC circuit.

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
  • H05B 3/14 - Heating elements characterised by the composition or nature of the materials or by the arrangement of the conductor characterised by the composition or nature of the conductive material the material being non-metallic

88.

TTAPE

      
Serial Number 98104924
Status Pending
Filing Date 2023-07-27
Owner Littelfuse, Inc. ()
NICE Classes  ? 09 - Scientific and electric apparatus and instruments

Goods & Services

Thermal sensing device, namely sensors for measuring temperature, for use in electronics and circuit protection devices; temperature sensors; circuit over-temperature protector devices

89.

TDOT

      
Serial Number 98104937
Status Pending
Filing Date 2023-07-27
Owner Littelfuse, Inc. ()
NICE Classes  ? 09 - Scientific and electric apparatus and instruments

Goods & Services

Thermal sensing device, namely, sensors for measuring temperature, for use in electronics and circuit protection devices; temperature sensors; circuit over-temperature protector devices

90.

Fuse design

      
Application Number 18153815
Grant Number 12027337
Status In Force
Filing Date 2023-01-12
First Publication Date 2023-07-20
Grant Date 2024-07-02
Owner Littelfuse, Inc. (USA)
Inventor Kim, Young Tae

Abstract

A fuse assembly includes a fuse element, a first terminal, a second terminal, a socket, and a capsule. The fuse element is disposed between first and second end bells. The first terminal includes a first bell portion, a first socket portion, and a first capsule portion, the first bell portion being connected to the first end bell. The second terminal includes a second bell portion, a second socket portion, and a second capsule portion, the second bell portion being connected to the second end bell. The first socket portion and the second socket portion are integrated through the socket. The first capsule portion and the second capsule portion are integrated through the capsule. The socket is seated atop the capsule to create an interior chamber inside which the fuse element is disposed.

IPC Classes  ?

  • H01H 85/43 - Means for exhausting or absorbing gases liberated by fusing arc, or for ventilating excess pressure generated by heating
  • H01H 85/02 - Protective devices in which the current flows through a part of fusible material and this current is interrupted by displacement of the fusible material when this current becomes excessive Details
  • H01H 85/143 - Electrical contactsFastening fusible members to such contacts
  • H01H 85/175 - Casings characterised by the casing shape or form
  • H01H 85/20 - Bases for supporting the fuseSeparate parts thereof

91.

Fuse terminal design

      
Application Number 17570161
Grant Number 11721511
Status In Force
Filing Date 2022-01-06
First Publication Date 2023-07-06
Grant Date 2023-08-08
Owner Littelfuse, Inc. (USA)
Inventor Yurkanin, Matthew David

Abstract

A fuse assembly includes a fuse element and a terminal vent channel. The fuse element is located between a first terminal and a second terminal. The fuse element breaks in response to an overcurrent event. The terminal vent channel is located in the first terminal and provides a path for the outgassing of debris during the overcurrent event.

IPC Classes  ?

  • H01H 85/43 - Means for exhausting or absorbing gases liberated by fusing arc, or for ventilating excess pressure generated by heating
  • H01H 85/143 - Electrical contactsFastening fusible members to such contacts
  • H01H 85/165 - Casings

92.

Attaching an isolated single stud fuse to an electrical device

      
Application Number 18121898
Grant Number 11869739
Status In Force
Filing Date 2023-03-15
First Publication Date 2023-07-06
Grant Date 2024-01-09
Owner Littelfuse, Inc. (USA)
Inventor
  • Schwartz, Geoffrey
  • Bianchin, Tiziano
  • Tinto, Massimiliano

Abstract

An electrical device assembly and method to attach an isolated single stud fuse assembly to an electrical device are disclosed. The electrical device assembly consists of multiple studs, one or more of which is replaced with the isolated single stud fuse. A conductive copper landing zone receives an electrically isolated steel stud. When the landing pad assembly is orbital riveted into a plastic housing of the electrical device, the stud is locked into the housing permanently. Electrical devices such as disconnect switches and power distribution modules, both of which include multiple studs, are good candidates for being adapted with the single stud fuse assembly.

IPC Classes  ?

  • H01R 9/24 - Terminal blocks
  • H01H 85/20 - Bases for supporting the fuseSeparate parts thereof
  • H01H 85/143 - Electrical contactsFastening fusible members to such contacts
  • H01H 85/22 - Intermediate or auxiliary parts for carrying, holding, or retaining fuse, co-operating with base or fixed holder, and removable therefrom for renewing the fuse
  • H01H 11/00 - Apparatus or processes specially adapted for the manufacture of electric switches
  • H01H 69/02 - Manufacture of fuses
  • H01H 85/02 - Protective devices in which the current flows through a part of fusible material and this current is interrupted by displacement of the fusible material when this current becomes excessive Details
  • H01H 89/00 - Combinations of two or more different basic types of electric switches, relays, selectors and emergency protective devices, not covered by any single one of the other main groups of this subclass
  • H02G 5/02 - Open installations
  • H01H 85/08 - Fusible members characterised by the shape or form of the fusible member
  • H01H 85/175 - Casings characterised by the casing shape or form
  • H01R 4/30 - Clamped connectionsSpring connections using a screw or nut clamping member

93.

Solid state relay harvesting power from load by measuring zero crossing

      
Application Number 17735629
Grant Number 11689196
Status In Force
Filing Date 2022-05-03
First Publication Date 2023-06-27
Grant Date 2023-06-27
Owner Littelfuse, Inc. (USA)
Inventor Howe, Bret R.

Abstract

A relay circuit, including a solid state relay switch, connected to a first relay line and to a charging capacitor, and connected to a second relay line. The relay circuit may also include a solid state relay control circuit, coupled between the charging capacitor and the solid state relay switch. The solid state relay control circuit may include a voltage detection circuit, having an input coupled to an output of the charging capacitor, and having an output arranged to generate a LOW voltage signal when a voltage level of the charging capacitor is below a low threshold value. The solid state relay control circuit may also include a zero crossing circuit, coupled to the first relay line and the second relay line, and having an output to generate a clock signal when a zero crossing event takes place between the first relay line and the second relay line.

IPC Classes  ?

  • H03K 17/13 - Modifications for switching at zero crossing
  • H03K 3/037 - Bistable circuits
  • H03K 19/20 - Logic circuits, i.e. having at least two inputs acting on one outputInverting circuits characterised by logic function, e.g. AND, OR, NOR, NOT circuits

94.

TEMPERATURE-SENSING TAPE BASED UPON BIMETAL SWITCH, AND METHOD OF TEMPERATURE CONTROL

      
Application Number 17551344
Status Pending
Filing Date 2021-12-15
First Publication Date 2023-06-15
Owner Littelfuse, Inc. (USA)
Inventor
  • Pineda, Martin G.
  • Godinez, Sergio Fuentes
  • Matus, Yuriy Borisovich

Abstract

A temperature-sensing tape including a flexible, electrically insulating substrate, a plurality of temperature-sensing elements disposed on the substrate, wherein a temperature-sensing element includes a bimetallic switch.

IPC Classes  ?

  • H01H 37/64 - Contacts
  • H01H 37/00 - Thermally-actuated switches
  • H02H 7/18 - Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for batteriesEmergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for accumulators

95.

Protection device including multi-plane fusible element

      
Application Number 17974015
Grant Number 11875962
Status In Force
Filing Date 2022-10-26
First Publication Date 2023-05-25
Grant Date 2024-01-16
Owner Littelfuse, Inc. (USA)
Inventor
  • Enriquez, Albert
  • Rosios, Lily Espenilla
  • Ramos, Arnel

Abstract

Disclosed are various protection devices and associated methods. In some embodiments, a protection device may include a substrate and a fusible element coupled to the substrate, wherein the fusible element may include a first end opposite a second end, and wherein the first and second ends wrap around the substrate. The fusible element may further include a central section comprising a plurality of segments connected end-to-end in a continuous arrangement between the first and second ends, wherein a first set of segments of the plurality of segments extends along a first plane, and wherein a second set of segments of the plurality of segments extends along a second plane, different than the first plane.

IPC Classes  ?

  • H01H 85/08 - Fusible members characterised by the shape or form of the fusible member
  • H01H 85/143 - Electrical contactsFastening fusible members to such contacts
  • H01H 85/20 - Bases for supporting the fuseSeparate parts thereof

96.

Magnetic sensing system for multiple door appliances

      
Application Number 17825450
Grant Number 11892525
Status In Force
Filing Date 2022-05-26
First Publication Date 2023-04-27
Grant Date 2024-02-06
Owner Littelfuse, Inc. (USA)
Inventor
  • Sabotta, Todd
  • Lee, Seong-Jae
  • Knapp, Stephen E.

Abstract

A magnetic sensing system includes a sensor and three magnets. The sensor is located within an appliance housing, the appliance having three moving components. The first magnet is disposed in a first orientation adjacent the first moving component, with the position of the first magnet changing in concert with movement of the first moving component. The second magnet is disposed in a second orientation adjacent the second moving component, with the position of the second magnet changing in concert with movement of the second moving component. The third magnet is disposed in a third orientation adjacent the third moving component, with the position of the third magnet changing in concert with movement of the third moving component. The sensor detects displacement of the first moving component, the second moving component, or the third moving component.

IPC Classes  ?

97.

PPTC HEATER AND MATERIAL HAVING STABLE POWER AND SELF-LIMITING BEHAVIOR

      
Application Number 17800799
Status Pending
Filing Date 2020-02-25
First Publication Date 2023-03-23
Owner Littelfuse, Inc. (USA)
Inventor
  • Zhou, Zhiyong
  • Fu, Yingsong

Abstract

A polymer positive temperature coefficient (PPTC) material may include a polymer matrix, the polymer matrix defining a PPTC body; and a graphene filler component, disposed in the polymer matrix, wherein the graphene filler component comprises a plurality of graphene particles aligned along a predetermined plane of the PPTC body.

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
  • 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
  • H05B 3/14 - Heating elements characterised by the composition or nature of the materials or by the arrangement of the conductor characterised by the composition or nature of the conductive material the material being non-metallic

98.

Quick assembly plug connector

      
Application Number 17404196
Grant Number 11677186
Status In Force
Filing Date 2021-08-17
First Publication Date 2023-02-23
Grant Date 2023-06-13
Owner Littelfuse, Inc. (USA)
Inventor Bianchin, Tiziano

Abstract

Provided herein is are quick-assembly plug connectors. In some embodiments, an assembly may include a body, and a contact carrier within the body, the contact carrier including a main body including a plurality of openings each operable to receive a contact, and a plurality of legs extending from the main body, each of the plurality of legs coupled with the body.

IPC Classes  ?

  • H01R 13/639 - Additional means for holding or locking coupling parts together after engagement
  • H01R 13/506 - BasesCases composed of different pieces assembled by snap action of the parts
  • H01R 13/52 - Dustproof, splashproof, drip-proof, waterproof, or flameproof cases
  • H01R 13/629 - Additional means for facilitating engagement or disengagement of coupling parts, e.g. aligning or guiding means, levers, gas pressure

99.

Fuse assembly including anti-rotation device

      
Application Number 17395757
Grant Number 12020882
Status In Force
Filing Date 2021-08-06
First Publication Date 2023-02-09
Grant Date 2024-06-25
Owner Littelfuse, Inc. (USA)
Inventor
  • Olszewski, Robert
  • Huang, Jeremy

Abstract

Provided herein is a fuse assembly including an anti-rotation device. In some embodiments, the fuse assembly may include a fusible device connected to a conductive component, wherein the conductive component is operable to connect to a terminal of a power source and a securement device coupled to the fusible device. The securement device may include a body including a recess operable to receive the fusible device and a support post extending from the body, wherein the support post is operable to engage the power source to reduce rotation of the securement device and the fusible device relative to the power source.

IPC Classes  ?

  • H01H 85/055 - Fusible members
  • H01H 85/02 - Protective devices in which the current flows through a part of fusible material and this current is interrupted by displacement of the fusible material when this current becomes excessive Details
  • H01H 85/165 - Casings

100.

Semiconductor chip package and method of assembly

      
Application Number 17940125
Grant Number 11948878
Status In Force
Filing Date 2022-09-08
First Publication Date 2023-02-02
Grant Date 2024-04-02
Owner LITTELFUSE, INC. (USA)
Inventor Steinhoff, Stefan

Abstract

A semiconductor device substrate assembly may include a first substrate, comprising: a first insulator plate; and a first patterned metal layer, disposed on the first insulator plate, wherein the first insulator plate comprises a first material and a first thickness. The assembly may include a second substrate, comprising: a second insulator plate; and a second patterned metal layer, disposed on the second insulator plate, wherein the second insulator plate comprises the first material and the first thickness. The assembly may also include a third substrate, disposed between the first substrate and the second substrate, comprising: a third insulator plate; and a third patterned metal layer, disposed on the third insulator plate, wherein the third insulator plate comprises a second material and a second thickness, wherein at least one of the second material and the second thickness differs from the first material and the first thickness, respectively.

IPC Classes  ?

  • H01L 25/00 - Assemblies consisting of a plurality of individual semiconductor or other solid-state devices
  • H01L 21/48 - Manufacture or treatment of parts, e.g. containers, prior to assembly of the devices, using processes not provided for in a single one of the groups or
  • H01L 23/498 - Leads on insulating substrates
  • H01L 25/065 - Assemblies consisting of a plurality of individual semiconductor or other solid-state devices all the devices being of a type provided for in a single subclass of subclasses , , , , or , e.g. assemblies of rectifier diodes the devices not having separate containers the devices being of a type provided for in group
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