TREA

Hirohisa Hotta

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  • Tokyo, JP
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Patents Grantslast 30 patents

  • Information Patent Grant

    Method of operating a blast furnace
    • Patent number 4,917,727
    • Issue date Apr 17, 1990
    • Nippon Kokan Kabushiki Kaisha
    • Hiroshi Saito
    • C21 - METALLURGY OF IRON
  • Information Patent Grant

    Tuyere of blast furnace
    • Patent number 4,887,800
    • Issue date Dec 19, 1989
    • Nippon Kokan Kabushiki Kaisha
    • Hirohisa Hotta
    • C21 - METALLURGY OF IRON