TREA

Keishi Hamada

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  • Omiya, JP
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Patents Grantslast 30 patents

  • Information Patent Grant

    Laminate film
    • Patent number 7,510,769
    • Issue date Mar 31, 2009
    • Nippon Bee Chemical Co., Ltd.
    • Takakazu Hase
    • C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
  • Information Patent Grant

    Treatment of inorganic building materials
    • Patent number 5,372,855
    • Issue date Dec 13, 1994
    • Hitachi Chemical Company Ltd.
    • Keishi Hamada
    • C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES
  • Information Patent Grant

    Treated inorganic building materials
    • Patent number 5,023,136
    • Issue date Jun 11, 1991
    • Hitachi Chemical Company, Ltd.
    • Keishi Hamada
    • C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES

Patents Applicationslast 30 patents