TREA

Yoshihiko Kamada

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Patents Grantslast 30 patents

  • Information Patent Grant

    Non-heat treated steel for soft-nitriding
    • Patent number 7,416,616
    • Issue date Aug 26, 2008
    • Sumitomo Metal Industries, Ltd.
    • Naoyuki Sano
    • C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
  • Information Patent Grant

    Non-heat treated, soft-nitrided steel parts
    • Patent number 6,391,124
    • Issue date May 21, 2002
    • Sumitomo Metals (Kokura) Ltd.
    • Hitoshi Matsumoto
    • C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
  • Information Patent Grant

    Steels, steel products for nitriding, nitrided steel parts
    • Patent number 6,083,455
    • Issue date Jul 4, 2000
    • Sumitomo Metal Industries, Ltd.
    • Masato Kurita
    • C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...

Patents Applicationslast 30 patents