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Liquid crystal polyester composition
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Patent number 4,889,886
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Issue date Dec 26, 1989
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Polyplastics Co., Ltd.
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Mitsuo Wada
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C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
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Polyester composition
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Patent number 4,861,515
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Issue date Aug 29, 1989
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Tsuyoshi Minamisawa
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C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
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Electrically conductive resin composition
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Patent number 4,772,422
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Issue date Sep 20, 1988
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Polyplastics Co., Ltd.
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Kenji Hijikata
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C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
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Polyester composition
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Patent number 4,758,636
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Issue date Jul 19, 1988
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Polyplastics Company, Ltd.
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Kenji Hijikata
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C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
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Magnetic disk
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Patent number 4,726,998
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Issue date Feb 23, 1988
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Polyplastics Co., Ltd.
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Yukio Ikenaga
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G11 - INFORMATION STORAGE
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Optical disc
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Patent number 4,719,171
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Issue date Jan 12, 1988
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Polyplastics Co., Inc.
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Yukio Ikenaga
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G11 - INFORMATION STORAGE
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Magnetic composite
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Patent number 4,626,371
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Issue date Dec 2, 1986
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Celanese Corporation
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Yukio Ikenaga
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G11 - INFORMATION STORAGE