TREA

Kenkichi Matsunaga

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  • Aichi, JP
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Patents Grantslast 30 patents

  • Information Patent Grant

    Alloys for exhaust valve
    • Patent number 4,871,512
    • Issue date Oct 3, 1989
    • Daido Tokushuko K.K.
    • Yoshiaki Takagi
    • C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
  • Information Patent Grant

    Heat-resisting steels
    • Patent number 4,650,645
    • Issue date Mar 17, 1987
    • Daido Steel Company Limited
    • Tetsuo Kato
    • C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
  • Information Patent Grant

    Alloys for exhaust valves
    • Patent number 4,631,169
    • Issue date Dec 23, 1986
    • Daido Tokushuko Kabushiki Kaisha
    • Susumu Isobe
    • C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...