Kuan-Chung Chang

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Tao-Yuan City, TW

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Patents Grantslast 30 patents

Information Patent Grant
Scratch-off material layer applied on optical recording media
- Patent number 6,901,043
- Issue date May 31, 2005
- U-Tech Media Corp.
- Shi-Hui Zhang
- G11 - INFORMATION STORAGE

Patents Applicationslast 30 patents

Information Patent Application
Scratch-off material layer applied on optical recording media
- Publication number 20030223348
- Publication date Dec 4, 2003
- Shi-Hui Zhang
- G11 - INFORMATION STORAGE