Ken Ishitobi

Person

Shiojiri, JP

People

Patents Grantslast 30 patents

Information Patent Grant
Polishing composition and method
- Patent number 6,607,571
- Issue date Aug 19, 2003
- Showa Denko K.K.
- Ken Ishitobi
- C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information Patent Grant
Polishing composition and method
- Patent number 6,488,729
- Issue date Dec 3, 2002
- Showa Denko K.K.
- Ken Ishitobi
- C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information Patent Grant
Abrasive composition for disc substrate, and process for polishing...
- Patent number 6,152,976
- Issue date Nov 28, 2000
- Showa Denko Kabushiki Kaisha
- Ken Ishitobi
- C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information Patent Grant
Abrasive composition for magnetic recording disc substrate
- Patent number 5,935,278
- Issue date Aug 10, 1999
- Showa Denko Kabushiki Kaisha
- Ken Ishitobi
- C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information Patent Grant
Composition adapted for use in texturing process for magnetic disc
- Patent number 5,626,640
- Issue date May 6, 1997
- Showa Denko K.K.
- Ken Ishitobi
- B24 - GRINDING POLISHING
Information Patent Grant
Composition for texturing magnetic disk
- Patent number 5,609,657
- Issue date Mar 11, 1997
- Showa Denko K.K.
- Ken Ishitobi
- B24 - GRINDING POLISHING
Information Patent Grant
Abrasive composition and process for polishing
- Patent number 4,929,257
- Issue date May 29, 1990
- Showa Denko Kabushiki Kaisha
- Kunihiro Miyazaki
- C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...
Information Patent Grant
Abrasive composition and process for polishing
- Patent number 4,915,710
- Issue date Apr 10, 1990
- Showa Denko Kabushiki Kaisha
- Kunihiro Miyazaki
- C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...
Information Patent Grant
Abrasive composition and process for polishing
- Patent number 4,883,502
- Issue date Nov 28, 1989
- Showa Denko Kabushiki Kaisha
- Kunihiro Miyazaki
- C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...

Patents Applicationslast 30 patents

Information Patent Application
Polishing composition and method
- Publication number 20030029095
- Publication date Feb 13, 2003
- Showa Denko K.K.
- Ken Ishitobi
- C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information Patent Application
Polishing composition and magnetic recording disk substrate polishe...
- Publication number 20020128327
- Publication date Sep 12, 2002
- Showa Denko K.K.
- Ken Ishitobi
- C01 - INORGANIC CHEMISTRY

Ken Ishitobi

Person

Patents Grantslast 30 patents

Polishing composition and method

Polishing composition and method

Abrasive composition for disc substrate, and process for polishing...

Abrasive composition for magnetic recording disc substrate

Composition adapted for use in texturing process for magnetic disc

Composition for texturing magnetic disk

Abrasive composition and process for polishing

Abrasive composition and process for polishing

Abrasive composition and process for polishing

Patents Applicationslast 30 patents

Polishing composition and method

Polishing composition and magnetic recording disk substrate polishe...