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Magnetic recording media
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Patent number 4,900,631
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Issue date Feb 13, 1990
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Nippon Zeon Co., Ltd.
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Masahiro Yamakawa
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C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
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Resin for magnetic paint
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Patent number 4,851,465
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Issue date Jul 25, 1989
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Nippon Zeon Co., Ltd.
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Masahiro Yamakawa
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C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
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Resin for magnetic coating
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Patent number 4,818,781
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Issue date Apr 4, 1989
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Nippon Zeon Co., Ltd.
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Masahiro Yamakawa
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C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
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