Yoshihisa Ogawa

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Chiba, JP

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Patents Grantslast 30 patents

Information Patent Grant
Polishing compound and a method for polishing
- Patent number 6,300,249
- Issue date Oct 9, 2001
- SpeedFam Co Ltd
- Akitoshi Yoshida
- C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information Patent Grant
Polishing method for silicon wafers which uses a polishing compound...
- Patent number 6,290,580
- Issue date Sep 18, 2001
- Speedfam-pec Co Ltd
- Hiroaki Tanaka
- B24 - GRINDING POLISHING
Information Patent Grant
Polishing compound and a polishing method for silicon wafer
- Patent number 6,238,272
- Issue date May 29, 2001
- SpeedFam-IPEC Co Ltd
- Hiroaki Tanaka
- C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...