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Tomoyasu Shimizu
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Tsukuba, JP
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last 30 patents
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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
Magnetic recording medium having a coupling agent disposed between...
Patent number
5,113,302
Issue date
May 12, 1992
Nippon Sheet Glass Co., Ltd.
Tomoyasu Shimizu
G11 - INFORMATION STORAGE
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