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Shyuichi Kojima
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Odawara, JP
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last 30 patents
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Patent Grant
Disk-type recording medium and storage apparatus
Patent number
5,272,581
Issue date
Dec 21, 1993
Hitachi, Ltd.
Shyuichi Kojima
G11 - INFORMATION STORAGE
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Patent Grant
Magnetic recording media for longitudinal recording
Patent number
4,792,497
Issue date
Dec 20, 1988
Hitachi, Ltd.
Hiroyuki Suzuki
G11 - INFORMATION STORAGE