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Polycarbonate and optical material
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Patent number 6,462,165
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Issue date Oct 8, 2002
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Idemitsu Petrochemical Co., Ltd.
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Mitsunori Ito
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C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
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Digital video disk substrate
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Patent number 6,183,830
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Issue date Feb 6, 2001
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Idemitsu Petrochemical Co., Ltd.
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Masaya Okamoto
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C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
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Process for producing polycarbonate
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Patent number 5,922,826
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Issue date Jul 13, 1999
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Idemitsu Kosan Co., Ltd.
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Shigeki Kuze
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C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
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Process for preparing polycarbonate
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Patent number 5,650,480
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Issue date Jul 22, 1997
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Idemitsu Petrochemical Co., Ltd.
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Ryozo Okumura
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C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
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Branched polycarbonate
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Patent number 5,625,027
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Issue date Apr 29, 1997
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Idemitsu Petrochemical Co., Ltd.
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Shigeki Kuze
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C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
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Process for producing polycarbonate
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Patent number 5,349,042
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Issue date Sep 20, 1994
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Idemitsu Petrochemical Co., Ltd.
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Shigeki Kuze
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C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
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Polycarbonate resin composition
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Patent number 5,314,949
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Issue date May 24, 1994
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Idemitsu Petrochemical Co., Ltd.
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Shiro Kozakura
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C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
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