Sijie Chi

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Shenzhen, CN

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Patents Grantslast 30 patents

Information Patent Grant
Microstrip filter and microphone device using same
- Patent number 9,900,706
- Issue date Feb 20, 2018
- AAC Technologies Pte. Ltd.
- Sijie Chi
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
MEMS microphone
- Patent number 9,648,427
- Issue date May 9, 2017
- AAC Technologies Pte. Ltd.
- Sijie Chi
- H04 - ELECTRIC COMMUNICATION TECHNIQUE

Patents Applicationslast 30 patents

Information Patent Application
MICROSTRIP FILTER AND MICROPHONE DEVICE USING SAME
- Publication number 20170034633
- Publication date Feb 2, 2017
- AAC Technologies Pte. Ltd.
- Sijie Chi
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
MEMS Microphone
- Publication number 20160219377
- Publication date Jul 28, 2016
- AAC Technologies Pte. Ltd.
- Sijie Chi
- H04 - ELECTRIC COMMUNICATION TECHNIQUE