Heung Woo Jeong

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Gyeongsangnam-do, KR

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Patents Grantslast 30 patents

Information Patent Grant
Waterproof microspeaker
- Patent number 12,267,659
- Issue date Apr 1, 2025
- EM-TECH CO., LTD.
- Gang Tae Kim
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Microspeaker enclosure with porous materials in resonance space
- Patent number 10,419,848
- Issue date Sep 17, 2019
- Em-Tech. Co., Ltd.
- Kyu Dong Choi
- H04 - ELECTRIC COMMUNICATION TECHNIQUE

Patents Applicationslast 30 patents

Information Patent Application
Waterproof Microspeaker
- Publication number 20230353944
- Publication date Nov 2, 2023
- EM-TECH. Co., Ltd.
- Gang Tae Kim
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Microspeaker Enclosure with Porous Materials in Resonance Space
- Publication number 20170359649
- Publication date Dec 14, 2017
- Em-Tech Co., Ltd.
- Kyu Dong Choi
- H04 - ELECTRIC COMMUNICATION TECHNIQUE