Koji Morita

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Nishi-shirakawa-gun, JP

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Patents Grantslast 30 patents

Information Patent Grant
Polishing pad, method and apparatus for treating polishing pad and...
- Patent number 6,190,238
- Issue date Feb 20, 2001
- Shin-Etsu Handotai Co., Ltd.
- Koichi Tanaka
- B24 - GRINDING POLISHING
Information Patent Grant
Method for polishing thin plate and apparatus for polishing
- Patent number 5,934,981
- Issue date Aug 10, 1999
- Shin-Etsu Handotai Co., Ltd.
- Koichi Tanaka
- B24 - GRINDING POLISHING
Information Patent Grant
Polishing system
- Patent number 5,797,789
- Issue date Aug 25, 1998
- Shin-Etsu Handotai Co., Ltd.
- Koichi Tanaka
- B24 - GRINDING POLISHING