TREA

Yukihisa Shiraishi

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Patents Grantslast 30 patents

  • Information Patent Grant

    Filter medium for molten metals
    • Patent number 5,998,322
    • Issue date Dec 7, 1999
    • Mitsui Mining & Smelting Co., Ltd.
    • Kazutomo Hoshino
    • B22 - CASTING POWDER METALLURGY
  • Information Patent Grant

    Ceramic filter for molten metal
    • Patent number 5,152,893
    • Issue date Oct 6, 1992
    • Mitsui Mining & Smelting Co., Ltd.
    • Yukihisa Shiraishi
    • C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...