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Jiro Sakai

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  • Ichihara, JP
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Patents Grantslast 30 patents

  • Information Patent Grant

    Crystalline polypropylene and crystalline polypropylene composition
    • Patent number 5,141,994
    • Issue date Aug 25, 1992
    • Sumitomo Chemical Co., Ltd.
    • Masahiro Kakugo
    • C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
  • 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-...