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Yuzo Yamamoto
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Wakayama, JP
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last 30 patents
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Patent Grant
Abrasive composition for the base of magnetic recording medium and...
Patent number
6,336,945
Issue date
Jan 8, 2002
Kao Corporation
Yuzo Yamamoto
B24 - GRINDING POLISHING
Information
Patent Grant
Magnetic recording medium and method for producing the same
Patent number
6,166,885
Issue date
Dec 26, 2000
Kao Corporation
Yuzo Yamamoto
B24 - GRINDING POLISHING
Information
Patent Grant
Magnetic recording medium and method for producing the same
Patent number
6,043,961
Issue date
Mar 28, 2000
Kao Corporation
Yuzo Yamamoto
B24 - GRINDING POLISHING
Information
Patent Grant
Magnetic recording medium having a lubricant layer with a specified...
Patent number
5,741,577
Issue date
Apr 21, 1998
Kao Corporation
Yuzo Yamamoto
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information
Patent Grant
Magnetic recording medium and manufacturing the same
Patent number
5,560,977
Issue date
Oct 1, 1996
Kao Corporation
Yuzo Yamamoto
G11 - INFORMATION STORAGE
Information
Patent Grant
Metal surface treatment and aqueous solution therefor
Patent number
5,246,507
Issue date
Sep 21, 1993
Kao Corporation
Kenji Kodama
C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...
Information
Patent Grant
Electrically conductive paste and coating
Patent number
5,209,873
Issue date
May 11, 1993
Kao Corporation
Yuzo Yamamoto
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
Process of making a magnetic recording medium
Patent number
5,188,866
Issue date
Feb 23, 1993
Kao Corporation
Yuzo Yamamoto
G11 - INFORMATION STORAGE
Information
Patent Grant
Conductive paste and conductive coating film
Patent number
5,158,708
Issue date
Oct 27, 1992
Kao Corporation
Yuzo Yamamoto
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information
Patent Grant
Electrically conductive paste composition
Patent number
5,156,771
Issue date
Oct 20, 1992
Kao Corporation
Yuzo Yamamoto
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information
Patent Grant
Magnetic recording medium
Patent number
5,080,982
Issue date
Jan 14, 1992
Kao Corporation
Yuzo Yamamoto
G11 - INFORMATION STORAGE
Information
Patent Grant
Metal surface treatment with an aqueous solution
Patent number
4,978,399
Issue date
Dec 18, 1990
Kao Corporation
Kenji Kodama
C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...
Information
Patent Grant
Electroplated composite of zinc and organic polymer
Patent number
4,797,183
Issue date
Jan 10, 1989
Kao Corporation
Yuzo Yamamoto
C25 - ELECTROLYTIC OR ELECTROPHORETIC PROCESSES APPARATUS THEREFOR