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Polymer electrolyte composition and fuel cell
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Patent number 8,273,500
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Issue date Sep 25, 2012
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Sumitomo Chemical Company, Limited
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Yasuhiro Yamashita
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C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
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Thermoplastic resin sheet and container
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Patent number 6,805,930
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Issue date Oct 19, 2004
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Sumitomo Chemical Company, Ltd.
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Satoshi Hanada
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B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
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Extrusion molding machine
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Patent number 6,685,460
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Issue date Feb 3, 2004
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Sumitomo Chemical Company, Ltd.
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Mitsunori Nodono
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B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
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Process for producing foamed resin article
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Patent number 6,596,783
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Issue date Jul 22, 2003
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Sumitomo Chemical Company, Limited
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Mitsunori Nodono
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C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
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Process for producing foamed resin article
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Patent number 6,399,667
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Issue date Jun 4, 2002
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Sumitomo Chemical Company, Limited
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Mitsunori Nodono
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B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL