Yifeng Yang

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Shanghai, CN

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Patents Grantslast 30 patents

Information Patent Grant
Infrared sensing device
- Patent number 8,421,020
- Issue date Apr 16, 2013
- Shanghai Kohler Electronics, Ltd.
- Weigen Chen
- E03 - WATER SUPPLY SEWERAGE

Patents Applicationslast 30 patents

Information Patent Application
INFRARED SENSING DEVICE
- Publication number 20100308224
- Publication date Dec 9, 2010
- Weigen Chen
- H03 - BASIC ELECTRONIC CIRCUITRY