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Takehiko Yoshida

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  • Hitachi, JP
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Patents Grantslast 30 patents

  • Information Patent Grant

    Heat resisting steel
    • Patent number 4,585,478
    • Issue date Apr 29, 1986
    • Hitachi, Ltd.
    • Takatoshi Yoshioka
    • C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
  • Information Patent Grant

    Rotor shaft of steam turbine
    • Patent number 4,504,554
    • Issue date Mar 12, 1985
    • Hitachi, Ltd.
    • Takatoshi Yoshioka
    • F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
  • Information Patent Grant

    Martensitic heat-resistant steel
    • Patent number 4,414,024
    • Issue date Nov 8, 1983
    • Hitachi, Ltd.
    • Masao Siga
    • C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...