Em-tech Co., Ltd.

République populaire  démocratique de Corée

 
Quantité totale PI 60
Rang # Quantité totale PI 22 752
Note d'activité PI 2,7/5.0    64
Rang # Activité PI 11 216

Brevets

Marques

60 0
0 0
0 0
0
 
Dernier brevet 2025 - Ceiling panel apparatus and meth...
Premier brevet 2003 - Wireless phone having improved sar

Derniers inventions, produits et services

2024 Invention Wearable device including speaker frame having vent hole. An example wearable device includes a ...
Invention Hybrid receiver having a bracket for installing a driver. A hybrid receiver includes: a first dr...
Invention Ceiling panel apparatus and method of manufacturing the same. Provided is an eco-friendly ceilin...
2023 Invention Two-way speaker. A two-way speaker includes: a frame having a space for accommodating parts; a y...
Invention Aerosol generating device authenticated by signal. Embodiments relate to an aerosol generating d...
Invention Microspeaker enclosure including porous particle material. A microspeaker enclosure includes a m...
Invention Block formed of porous material and microspeaker enclosure including the same. Provided is a blo...
Invention Eeg measuring device. The present disclosure relates to an EEG measuring device which is in clos...
Invention Waterproof microspeaker. A waterproof microspeaker includes: a frame; a magnetic circuit provide...
Invention Hybrid microspeaker. A hybrid microspeaker includes a low-frequency range speaker and a high-fre...
Invention Electrically heated smoking article. An electrically heated smoking article includes a filter la...
Invention Electrically heated smoking article. An electrically heated smoking article includes a filter ro...
Invention Fpcb diaphragm microspeaker having magnetic field pair structure. The present disclosure relates...
2022 Invention Sound amplification block made of air-permeable material and air-absorbing material and having la...
Invention Diaphragm for high pressure waterproof microspeaker and high pressure waterproof microspeaker inc...
Invention Microspeaker having a flexible printed circuit board as a diaphragm. A microspeaker in which a d...
Invention Microspeaker enclosure including block formed of porous particles. The present disclosure provide...
Invention Microspeaker enclosure including block formed of porous particles. The present disclosure provid...
Invention Wireless earbud device. A wireless earbud device includes at least one wireless earbud including...
Invention Earphone with duct unit dividing pressure equilibrium hole and back hole. The present disclosure ...
2021 Invention Two-way receiver having front bass duct. A two-way receiver includes a cylindrical frame, a yoke ...
Invention Diaphragm for waterproof microspeaker. Provided is a diaphragm for a high water pressure waterpr...
Invention Diaphragm for waterproof microspeaker and microspeaker having the same. A high water pressure mi...
Invention Hybrid receiver having fixing bracket for drivers. A hybrid receiver includes a dynamic driver in...
Invention Receiver having pressure equilibrium structure. A receiver having a pressure equilibrium structur...
Invention Earphone having pressure equilibrium structure. Provided is an earphone having a pressure equilib...
Invention Microspeaker module having duct communicating with vent hole. Provided is a microspeaker module ...
Invention Sound converting device having near-infrared ray emission function. The present disclosure relate...
Invention Wireless sound converting system having bio-signal sensing function. Disclosed is a wireless sou...
Invention Wireless sound converting system having bio-signal sensing function. At least one of first and s...
Invention Receiver module having pressure equilibrium structure. Disclosed is a receiver module including: ...
Invention Yoke assembly for two-way receiver and two-way receiver having the same. Disclosed are a yoke ass...
Invention Canal-type earphone having pressure equilibrium structure. Disclosed is a canal-type earphone hav...
2020 Invention Microspeaker used in microspeaker box filled with porous particles. Disclosed is a microspeaker f...
Invention Sound vibration sensor using piezoelectric element having cantilever structure. Disclosed is a so...
Invention Translation system using sound vibration microphone. Disclosed is a translation system using a so...
Invention Portable aerosol generator. The present invention relates to a portable aerosol generator that v...
Invention Circuit for sensing and controlling heater voltage in aerosol generator. The present invention r...
Invention Wireless earbud having external ear contact point. Disclosed is an earbud including a head housin...
Invention Receiver unit having pressure equilibrium structure and compensation structure for low frequency....
Invention Receiver module integrated with duct. Disclosed is a receiver module integrated with a duct. The ...
Invention Bonding structure of diaphragm for receiver. Disclosed is a bonding structure of a diaphragm for ...
Invention Method for purifying waste n-methyl-2-pyrrolidone mixture solution. A method for purifying a was...
Invention Sound generating actuator. The present invention is intended to provide a sound generating actuat...
Invention Bone conduction speaker. A bone conduction speaker is provided. The bone conduction speaker inclu...
Invention Earset having inner microphone. Embodiments described herein provide an earset that has a chamber...
Invention Open-air type earphone with bracket forming bass pipe. An open-air type earphone with a bracket f...
2019 Invention High-water pressure waterproof microspeaker. A waterproof speaker having a waterproof rating of 8...
Invention Bidirectional translation system. A bidirectional translation system includes a translation rela...
Invention Automatic winding device. An automatic winding device includes a lower casing having a shaft, a ...