Guojun Liu

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Shenzhen, CN

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Patents Grantslast 30 patents

Information Patent Grant
MEMS microphone device
- Patent number 9,699,538
- Issue date Jul 4, 2017
- AAC Acoustic Technologies (Shenzhen) Co. Ltd.
- Guojun Liu
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
MEMS microphone device
- Patent number 9,510,109
- Issue date Nov 29, 2016
- AAC Acoustic Technologies (Shenzhen) Co. Ltd.
- Guojun Liu
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Silicon based capacitive microphone
- Patent number 8,983,107
- Issue date Mar 17, 2015
- AAC Acoustic Technologies (Shenzhen) Co., Ltd.
- Guojun Liu
- B81 - MICRO-STRUCTURAL TECHNOLOGY

Patents Applicationslast 30 patents

Information Patent Application
MEMS MICROPHONE DEVICE
- Publication number 20160212517
- Publication date Jul 21, 2016
- AAC ACOUSTIC TECHNOLOGIES (SHENZHEN) CO. LTD.
- Guojun Liu
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
MEMS MICROPHONE DEVICE
- Publication number 20160212549
- Publication date Jul 21, 2016
- AAC ACOUSTIC TECHNOLOGIES (SHENZHEN) CO.,LTD.
- Guojun Liu
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
SILICON BASED CAPACITIVE MICROPHONE
- Publication number 20130216068
- Publication date Aug 22, 2013
- ACC Acoustic Technologies(Shenzhen)Co., Ltd.
- Guojun Liu
- B81 - MICRO-STRUCTURAL TECHNOLOGY