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Shinya Katayama
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Osaka, JP
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last 30 patents
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Patent Grant
Magnetic recording medium and a method of manufacturing the same
Patent number
6,365,012
Issue date
Apr 2, 2002
Nippon Sheet Glass Co., Ltd.
Toshiyuki Sato
G11 - INFORMATION STORAGE
Information
Patent Grant
Glass substrate for magnetic disks
Patent number
6,132,843
Issue date
Oct 17, 2000
Nippon Sheet Glass Do., Ltd.
Yasunao Kuroda
B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
Information
Patent Grant
Optical part
Patent number
5,638,479
Issue date
Jun 10, 1997
Nippon Sheet Glass Co., Ltd.
Manabu Takami
G02 - OPTICS
Information
Patent Grant
Substrate used for magnetic disk and magnetic recording medium usin...
Patent number
5,427,867
Issue date
Jun 27, 1995
Nippon Sheet Glass Co., Ltd.
Toshihiro Kogure
G11 - INFORMATION STORAGE
Information
Patent Grant
Process for producing a minute-patterned substrate
Patent number
5,234,717
Issue date
Aug 10, 1993
Nippon Sheet Glass Co., Ltd.
Yoshihiro Matsuno
B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
Information
Patent Grant
Magnetic recording medium with an intermediate protective layer of...
Patent number
5,055,359
Issue date
Oct 8, 1991
Nippon Sheet Glass Co., Ltd.
Toshio Tsuno
G11 - INFORMATION STORAGE
Information
Patent Grant
Substrate with fine grooves and method for manufacturing the same
Patent number
4,810,547
Issue date
Mar 7, 1989
Nippon Sheet Glass Co., Ltd.
Tsutomu Minami
B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL