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Kizuku Wakatsuki

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Patents Grantslast 30 patents

  • Information Patent Grant

    Rubber composition
    • Patent number 6,087,424
    • Issue date Jul 11, 2000
    • Sumitomo Chemical Company Limited
    • Keisaku Yamamoto
    • C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
  • Information Patent Grant

    Rubber composition
    • Patent number 5,703,151
    • Issue date Dec 30, 1997
    • Sumitomo Chemical Company, Limited
    • Keisaku Yamamoto
    • C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
  • Information Patent Grant

    Process for producing ethylene-alpha-olefin copolymer rubber
    • Patent number 5,516,862
    • Issue date May 14, 1996
    • Sumitomo Chemical Company, Limited
    • Keisaku Yamamoto
    • C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
  • Information Patent Grant

    Rubber composition for tire treads
    • Patent number 5,430,086
    • Issue date Jul 4, 1995
    • Sumitomo Rubber Industries
    • Yuichi Saito
    • B60 - VEHICLES IN GENERAL
  • Information Patent Grant

    Butadiene copolymer and process for preparing same
    • Patent number 5,290,878
    • Issue date Mar 1, 1994
    • Sumitomo Chemical Company, Limited
    • Keisaku Yamamoto
    • C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
  • Information Patent Grant

    Method for purifying ethylene-.alpha.-olefin copolymer
    • Patent number 5,245,007
    • Issue date Sep 14, 1993
    • Sumitomo Chemical Co., Ltd.
    • Keisaku Yamamoto
    • C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
  • Information Patent Grant

    Catalyst for olefinic hydrocarbon polymerization and process and pr...
    • Patent number 5,191,041
    • Issue date Mar 2, 1993
    • Sumitomo Chemical Co., Ltd.
    • Hayato Saba
    • C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
  • Information Patent Grant

    Catalyst for olefinic hydrocarbon polymerization and process for pr...
    • Patent number 5,122,493
    • Issue date Jun 16, 1992
    • Sumitomo Chemical Co., Ltd.
    • Hayato Saba
    • C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
  • Information Patent Grant

    High-strength polypropylene fiber
    • Patent number 5,039,748
    • Issue date Aug 13, 1991
    • Sumitomo Chemical Co., Ltd.
    • Kizuku Wakatsuki
    • D01 - NATURAL OR ARTIFICIAL THREADS OR FIBRES SPINNING
  • Information Patent Grant

    Resinous composition for powder coating
    • Patent number 4,946,895
    • Issue date Aug 7, 1990
    • Sumitomo Chemical Company, Ltd.
    • Tadayuki Ohmae
    • C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
  • Information Patent Grant

    Resin composition
    • Patent number 4,883,842
    • Issue date Nov 28, 1989
    • Sumitomo Chemical Company, Limited
    • Shigeo Tanaka
    • C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
  • Information Patent Grant

    Process for producing 4-methylpentene-1 copolymer and resin composi...
    • Patent number 4,801,650
    • Issue date Jan 31, 1989
    • Sumimoto Chemical Co., Ltd.
    • Kizuku Wakatsuki
    • C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
  • Information Patent Grant

    Polypropylene sheet
    • Patent number 4,748,207
    • Issue date May 31, 1988
    • Sumitomo Chemical Company, Limited
    • Masahiro Kakugo
    • C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
  • Information Patent Grant

    Process for producing propylene copolymer
    • Patent number 4,696,979
    • Issue date Sep 29, 1987
    • Sumitomo Chemical Company, Limited
    • Akinobu Shiga
    • C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
  • Information Patent Grant

    Crystalline polybutene-1 compositions
    • Patent number 4,663,394
    • Issue date May 5, 1987
    • Sumitomo Chemical Company, Limited
    • Masahiro Kakugo
    • C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
  • Information Patent Grant

    Stretched polypropylene film
    • Patent number 4,603,174
    • Issue date Jul 29, 1986
    • Sumitomo Chemical Company, Limited
    • Tadayuki Okada
    • C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
  • Information Patent Grant

    Stretched multilayer polypropylene film
    • Patent number 4,584,239
    • Issue date Apr 22, 1986
    • Sumitomo Chemical Company, Limited
    • Masahiro Kakugo
    • B32 - LAYERED PRODUCTS
  • Information Patent Grant

    Crystalline propylene polymer composition
    • Patent number 4,551,501
    • Issue date Nov 5, 1985
    • Sumitomo Chemical Company, Limited
    • Akinobu Shiga
    • C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
  • Information Patent Grant

    Process for producing polyolefin
    • Patent number 4,483,939
    • Issue date Nov 20, 1984
    • Sumitomo Chemical Company, Limited
    • Kazuo Baba
    • C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
  • Information Patent Grant

    Catalyst system for polymerization of olefins and process for produ...
    • Patent number 4,350,802
    • Issue date Sep 21, 1982
    • Sumitomo Chemical Company, Limited
    • Kazuo Baba
    • C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
  • Information Patent Grant

    Process for polymerizing olefins
    • Patent number 4,339,560
    • Issue date Jul 13, 1982
    • Sumitomo Chemical Company, Limited
    • Kazuo Baba
    • C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...