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Impact resistant polystyrene composition
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Patent number 6,005,050
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Issue date Dec 21, 1999
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Idemitsu Petrochemical Co., Ltd.
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Akihiko Okada
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C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
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Impact resistant polystyrene composition
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Patent number 5,543,462
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Issue date Aug 6, 1996
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Idemitsu Kosan Co., Ltd.
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Akihiko Okada
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C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
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Polystyrene composition
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Patent number 5,418,275
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Issue date May 23, 1995
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Idemitsu Kosan Co., Ltd.
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Akihiko Okada
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C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...