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Yutaka Hirashima

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Patents Grantslast 30 patents

  • Information Patent Grant

    Circuit substrate
    • Patent number 6,309,737
    • Issue date Oct 30, 2001
    • Denki Kagaku Kogyo Kabushiki Kaisha
    • Yutaka Hirashima
    • C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES
  • Information Patent Grant

    Heat-resistant electrode material, electrode using the same, and ap...
    • Patent number 5,698,035
    • Issue date Dec 16, 1997
    • Tokyo Electron Limited
    • Masahiko Matsudo
    • C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...
  • Information Patent Grant

    Chromium carbide sintered body
    • Patent number RE33905
    • Issue date Apr 28, 1992
    • Denki Kagaku Kogyo Kabushiki Kaisha
    • Kei Isozaki
    • 501 - Compositions: ceramic
  • Information Patent Grant

    Chromium carbide sintered body
    • Patent number 4,927,791
    • Issue date May 22, 1990
    • Denki Kagaku Kogyo Kabushiki Kaisha
    • Kei Isozaki
    • C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES

Patents Applicationslast 30 patents

  • Information Patent Application

    Circuit substrate
    • Publication number 20020037435
    • Publication date Mar 28, 2002
    • DENKI KAGAKU KOGYO KABUSHIKI KAISHA
    • Yutaka Hirashima
    • C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES