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Katsuhisa Ishikawa

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Patents Grantslast 30 patents

  • Information Patent Grant

    Ni-Zn type ferrite
    • Patent number 5,876,618
    • Issue date Mar 2, 1999
    • NEC Corporation
    • Katsuhisa Ishikawa
    • C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES
  • Information Patent Grant

    Ni-Zn base ferrite
    • Patent number 5,874,020
    • Issue date Feb 23, 1999
    • NEC Corporation
    • Katsuhisa Ishikawa
    • C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES
  • Information Patent Grant

    Low thermal expansion cast alloy
    • Patent number 4,832,908
    • Issue date May 23, 1989
    • NEC Corporation
    • Katsuhisa Ishikawa
    • C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...