TREA

Keiji Yamasaki

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  • Yasugi, JP
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Patents Grantslast 30 patents

  • Information Patent Grant

    Vane material and process for preparing same
    • Patent number 5,754,935
    • Issue date May 19, 1998
    • Hitachi Metals, Ltd.
    • Yutaka Kubo
    • C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
  • Information Patent Grant

    Rotary type compressor
    • Patent number 5,591,023
    • Issue date Jan 7, 1997
    • Hitachi Metals, Ltd.
    • Hideki Nakamura
    • F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES