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Koki Shiduka

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  • Takasaki-Shi, JP
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Patents Grantslast 30 patents

  • Information Patent Grant

    Resin-coated sand
    • Patent number 7,267,876
    • Issue date Sep 11, 2007
    • Gun Ei Chemical Industry Co., Ltd.
    • Akihiro Okubo
    • B22 - CASTING POWDER METALLURGY

Patents Applicationslast 30 patents

  • Information Patent Application

    Resin-coated sand
    • Publication number 20060284346
    • Publication date Dec 21, 2006
    • Gun Ei Chemical Industry Co., Ltd.
    • Akihiro Okubo
    • B22 - CASTING POWDER METALLURGY
  • Information Patent Application

    Resin-coated sand
    • Publication number 20040197558
    • Publication date Oct 7, 2004
    • Gun Ei Chemical Industry Co., Ltd.
    • Akihiro Okubo
    • B22 - CASTING POWDER METALLURGY