YAMAGUCHI SEIKEN KOGYO K.K.

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AICHI, JP

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Patents Grantslast 30 patents

Information Patent Grant
Polishing composition for magnetic disk substrate
- Patent number 10,844,243
- Issue date Nov 24, 2020
- YAMAGUCHI SEIKEN KOGYO CO., LTD.
- Toru Iwata
- C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
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 10,696,870
- Issue date Jun 30, 2020
- YAMAGUCHI SEIKEN KOGYO CO., LTD.
- Toru Iwata
- C01 - INORGANIC CHEMISTRY
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 for magnetic disk substrate
- Patent number 10,577,445
- Issue date Mar 3, 2020
- YAMAGUCHI SEIKEN KOGYO CO., LTD.
- Toru Iwata
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Polishing composition for magnetic disc substrate
- Patent number 10,233,357
- Issue date Mar 19, 2019
- YAMAGUCHI SEIKEN KOGYO CO., LTD.
- Junichiro Ando
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Polishing composition for magnetic disc substrate
- Patent number 10,233,358
- Issue date Mar 19, 2019
- YAMAGUCHI SEIKEN KOGYO CO., LTD.
- Junichiro Ando
- G11 - INFORMATION STORAGE
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
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 and process for polishing plastic article
- Patent number 4,935,039
- Issue date Jun 19, 1990
- Showa Denko Kabushiki Kaisha
- Kunihiro Miyazaki
- C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
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...

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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 20210198524
- Publication date Jul 1, 2021
- YAMAGUCHI SEIKEN KOGYO CO., LTD.
- Junichiro Ando
- C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...
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 FOR MAGNETIC DISK SUBSTRATE
- Publication number 20190119423
- Publication date Apr 25, 2019
- YAMAGUCHI SEIKEN KOGYO CO., LTD.
- Toru IWATA
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Application
POLISHING COMPOSITION FOR MAGNETIC DISK SUBSTRATE
- Publication number 20190010358
- Publication date Jan 10, 2019
- YAMAGUCHI SEIKEN KOGYO CO., LTD.
- Toru IWATA
- C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information Patent Application
POLISHING COMPOSITION FOR MAGNETIC DISK SUBSTRATE
- Publication number 20180371293
- Publication date Dec 27, 2018
- YAMAGUCHI SEIKEN KOGYO CO., LTD.
- Junichiro Ando
- C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information Patent Application
POLISHING COMPOSITION FOR MAGNETIC DISK SUBSTRATE
- Publication number 20180273803
- Publication date Sep 27, 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 20180215953
- Publication date Aug 2, 2018
- YAMAGUCHI SEIKEN KOGYO CO., LTD.
- Toru IWATA
- B24 - GRINDING POLISHING
Information Patent Application
POLISHING COMPOSITION FOR MAGNETIC DISC SUBSTRATE
- Publication number 20180057712
- Publication date Mar 1, 2018
- YAMAGUCHI SEIKEN KOGYO CO., LTD.
- Junichiro Ando
- C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information Patent Application
POLISHING COMPOSITION FOR MAGNETIC DISC SUBSTRATE
- Publication number 20170321086
- Publication date Nov 9, 2017
- YAMAGUCHI SEIKEN KOGYO CO., LTD.
- Junichiro ANDO
- C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
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...
Information Patent Application
Composition for Texturing Process
- Publication number 20080070482
- Publication date Mar 20, 2008
- SHOWA DENKO K.K.
- Jiro Yamada
- G11 - INFORMATION STORAGE

YAMAGUCHI SEIKEN KOGYO K.K.

Organization

Patents Grantslast 30 patents

Polishing composition for magnetic disk substrate

Polishing composition and method for polishing magnetic disk substrate

Polishing composition for magnetic disk substrate

Polishing composition for magnetic disk substrate

Polishing composition for magnetic disk substrate

Polishing composition for magnetic disc substrate

Polishing composition for magnetic disc substrate

Polishing composition and method for polishing magnetic disk substrate

Polishing composition and method for polishing magnetic disk substrate

Polishing composition and method

Polishing composition and method

Abrasive composition and process for polishing plastic article

Abrasive composition and process for polishing

Abrasive composition and process for polishing

Patents Applicationslast 30 patents

POLISHING COMPOSITION, AND POLISHING METHOD USING POLISHING COMPOSI...

POLISHING COMPOSITION FOR MAGNETIC DISK SUBSTRATE

POLISHING COMPOSITION FOR MAGNETIC DISK SUBSTRATE

POLISHING COMPOSITION FOR MAGNETIC DISK SUBSTRATE

POLISHING COMPOSITION FOR MAGNETIC DISK SUBSTRATE

POLISHING COMPOSITION FOR MAGNETIC DISK SUBSTRATE

POLISHING COMPOSITION FOR MAGNETIC DISK SUBSTRATE

POLISHING COMPOSITION AND METHOD FOR POLISHING MAGNETIC DISK SUBSTRATE

POLISHING COMPOSITION FOR MAGNETIC DISC SUBSTRATE

POLISHING COMPOSITION FOR MAGNETIC DISC SUBSTRATE

POLISHING COMPOSITION AND METHOD FOR POLISHING MAGNETIC DISK SUBSTRATE

POLISHING COMPOSITION AND METHOD FOR POLISHING MAGNETIC DISK SUBSTRATE

Composition for Texturing Process