TREA

Masaru Shirasaka

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  • Tokyo, JP
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Patents Grantslast 30 patents

  • Information Patent Grant

    Method of producing porous magnesia clinker
    • Patent number 4,627,878
    • Issue date Dec 9, 1986
    • Onoda Cement Co., Ltd.
    • Hiroshi Hagiwara
    • C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES
  • Information Patent Grant

    Desulfurizing agent
    • Patent number 4,540,553
    • Issue date Sep 10, 1985
    • Onoda Cement Co., Inc.
    • Hiroshi Hagiwara
    • B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL