Yi-Chang Tsao

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Hisnchu City, TW

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Patents Grantslast 30 patents

Information Patent Grant
Method for grinding lens
- Patent number 6,896,594
- Issue date May 24, 2005
- AU Optronics Corp.
- Yi-Chang Tsao
- B24 - GRINDING POLISHING

Patents Applicationslast 30 patents

Information Patent Application
Optical disc recorder with printing device
- Publication number 20070109381
- Publication date May 17, 2007
- Lite-On it Corporation
- Danny Liao
- B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
Information Patent Application
METHOD FOR GRINDING LENS
- Publication number 20050075054
- Publication date Apr 7, 2005
- Yi-Chang Tsao
- B24 - GRINDING POLISHING