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Hollow foamed polyolefinic resin container
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Patent number 6,713,139
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Issue date Mar 30, 2004
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Sumitomo Chemical Company, Limited
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Nobuhiro Usui
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B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
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Molding mold
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Patent number 6,428,306
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Issue date Aug 6, 2002
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Sumitomo Chemical Company, Limited
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Takeo Kitayama
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B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
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Polypropylene-based foamed sheet
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Patent number 6,124,025
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Issue date Sep 26, 2000
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Sumitomo Chemical Company, Limited
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Takeo Kitayama
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C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
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Method of press-molding thermoplastic resin
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Patent number 6,001,287
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Issue date Dec 14, 1999
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Sumitomo Chemical Company, Limited
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Masahito Matsumoto
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B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
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Thermoplastic resin molded product
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Patent number 5,849,466
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Issue date Dec 15, 1998
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Sumitomo Chemical Company, Limited
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Masahito Matsumoto
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C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
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Method of press-molding thermoplastic resins
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Patent number 5,795,510
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Issue date Aug 18, 1998
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Sumitomo Chemical Company, Limited
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Masahito Matsumoto
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B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
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See-through concrete form
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Patent number 5,431,366
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Issue date Jul 11, 1995
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Sumitomo Chemical Company, Limited
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Masahito Matsumoto
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B28 - WORKING CEMENT, CLAY, OR STONE
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