Cheng-Hsien Chao

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Taipei City, TW

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Patents Grantslast 30 patents

Information Patent Grant
Key management method
- Patent number 6,658,114
- Issue date Dec 2, 2003
- Industrial Technology Research Institute
- Kwo-Jean Farn
- H04 - ELECTRIC COMMUNICATION TECHNIQUE

Patents Applicationslast 30 patents

Information Patent Application
APPARATUS FOR IMAGE REPRODUCTION AND METHOD THEREFOR
- Publication number 20110199456
- Publication date Aug 18, 2011
- QISDA CORPORATION
- Cheng-Feng Chao
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
MP3 headphone structure
- Publication number 20060080431
- Publication date Apr 13, 2006
- Cheng-Hsien Chao
- H04 - ELECTRIC COMMUNICATION TECHNIQUE