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Tomoaki Seki

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  • Ichihara, JP
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Patents Grantslast 30 patents

  • Information Patent Grant

    Modified diene polymer rubbers
    • Patent number 5,219,938
    • Issue date Jun 15, 1993
    • Sumitomo Chemical Company, Limited
    • Akio Imai
    • B60 - VEHICLES IN GENERAL
  • Information Patent Grant

    Modified diene polymer rubbers
    • Patent number 5,189,109
    • Issue date Feb 23, 1993
    • Sumitomo Chemical Company, Limited
    • Akio Imai
    • C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
  • Information Patent Grant

    Modified diene polymer rubbers
    • Patent number 5,128,416
    • Issue date Jul 7, 1992
    • Sumitomo Chemical Company, Limited
    • Akio Imai
    • B60 - VEHICLES IN GENERAL
  • Information Patent Grant

    Process for preparing modified diene polymer rubbers
    • Patent number 5,015,692
    • Issue date May 14, 1991
    • Sumitomo Chemical Company, Limited
    • Hiroyoshi Takao
    • C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
  • Information Patent Grant

    Modified diene polymer rubbers
    • Patent number 4,885,338
    • Issue date Dec 5, 1989
    • Sumitomo Chemical Company, Limited
    • Hiroyoshi Takao
    • C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
  • Information Patent Grant

    Process for producing thermoplastic elastomers
    • Patent number 4,845,173
    • Issue date Jul 4, 1989
    • Sumitomo Chemical Company
    • Nobuyuki Yoshida
    • C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
  • Information Patent Grant

    Elastomeric copolymer of aromatic vinyl compounds and butadiene
    • Patent number 4,743,652
    • Issue date May 10, 1988
    • Sumitomo Chemical Co., Ltd.
    • Nobuyuki Yoshida
    • C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
  • Information Patent Grant

    Branched polymer, process for the preparation thereof, tire tread r...
    • Patent number 4,523,618
    • Issue date Jun 18, 1985
    • Sumitomo Chemical Company, Ltd.
    • Keisaku Yamamoto
    • B60 - VEHICLES IN GENERAL
  • Information Patent Grant

    Composition containing isoprene polymer
    • Patent number 4,385,151
    • Issue date May 24, 1983
    • Sumitomo Rubber Industries, Ltd.
    • Hiroshi Furukawa
    • C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...