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Magnetic recording medium
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Patent number 5,952,074
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Issue date Sep 14, 1999
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Hitachi Maxell, Ltd.
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Nobuhiro Umebayashi
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G11 - INFORMATION STORAGE
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Magnetic recording medium
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Patent number 5,789,062
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Issue date Aug 4, 1998
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Hitachi Maxell, Ltd.
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Nobuhiro Umebayashi
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G11 - INFORMATION STORAGE
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Stamper for producing recording medium
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Patent number 5,756,130
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Issue date May 26, 1998
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Hitaci Maxell, Ltd.
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Nobuhiro Umebayashi
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B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
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Magnetic recording medium
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Patent number 5,430,594
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Issue date Jul 4, 1995
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Hitachi Maxell, Ltd.
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Nobuhiro Umebayashi
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G11 - INFORMATION STORAGE
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