Akira SUGAWA

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Aichi, JP

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Patents Grantslast 30 patents

Information Patent Grant
Polishing composition and method for polishing magnetic disk substrate
- Patent number 10,822,525
- Issue date Nov 3, 2020
- YAMAGUCHI SEIKEN KOGYO CO., LTD.
- Toru Iwata
- C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information Patent Grant
Polishing composition for magnetic disk substrate
- Patent number 10,662,272
- Issue date May 26, 2020
- YAMAGUCHI SEIKEN KOGYO CO., LTD.
- Akira Sugawa
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Polishing composition and method for polishing magnetic disk substrate
- Patent number 9,862,863
- Issue date Jan 9, 2018
- YAMAGUCHI SEIKEN KOGYO CO., LTD.
- Toru Iwata
- B24 - GRINDING POLISHING
Information Patent Grant
Polishing composition and method for polishing magnetic disk substrate
- Patent number 9,856,401
- Issue date Jan 2, 2018
- YAMAGUCHI SEIKEN KOGYO CO., LTD.
- Toru Iwata
- B24 - GRINDING POLISHING

Patents Applicationslast 30 patents

Information Patent Application
POLISHING COMPOSITION, AND POLISHING METHOD USING POLISHING COMPOSI...
- Publication number 20230312983
- Publication date Oct 5, 2023
- YAMAGUCHI SEIKEN KOGYO CO., LTD.
- Yuji GOTO
- C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information Patent Application
POLISHING COMPOSITION FOR MAGNETIC DISK SUBSTRATE
- Publication number 20190119422
- Publication date Apr 25, 2019
- YAMAGUCHI SEIKEN KOGYO CO., LTD.
- Akira SUGAWA
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Application
POLISHING COMPOSITION AND METHOD FOR POLISHING MAGNETIC DISK SUBSTRATE
- Publication number 20180215953
- Publication date Aug 2, 2018
- YAMAGUCHI SEIKEN KOGYO CO., LTD.
- Toru IWATA
- B24 - GRINDING POLISHING
Information Patent Application
POLISHING COMPOSITION AND METHOD FOR POLISHING MAGNETIC DISK SUBSTRATE
- Publication number 20170015867
- Publication date Jan 19, 2017
- YAMAGUCHI SEIKEN KOGYO CO., LTD.
- Toru IWATA
- C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information Patent Application
POLISHING COMPOSITION AND METHOD FOR POLISHING MAGNETIC DISK SUBSTRATE
- Publication number 20170015868
- Publication date Jan 19, 2017
- YAMAGUCHI SEIKEN KOGYO CO., LTD.
- Toru IWATA
- C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...