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Susumu Kitaoka
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Kyoto, JP
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last 30 patents
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Patent Grant
Cobalt-containing iron oxide magnetic particles and method for the...
Patent number
4,857,417
Issue date
Aug 15, 1989
Hitachi Maxell, Ltd.
Susumu Kitaoka
G11 - INFORMATION STORAGE
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Patent Grant
Method for preparing cobalt-containing iron oxide magnetic particles
Patent number
4,741,921
Issue date
May 3, 1988
Hitachi Maxell, Ltd.
Susumu Kitaoka
G11 - INFORMATION STORAGE
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Patent Grant
Magnetic recording medium
Patent number
4,364,988
Issue date
Dec 21, 1982
Hitachi Maxell, Ltd.
Haruo Andoh
G11 - INFORMATION STORAGE