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Koji Watari

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Patents Grantslast 30 patents

  • Information Patent Grant

    Carburized shaft part
    • Patent number 11,421,727
    • Issue date Aug 23, 2022
    • Nippon Steel Corporation
    • Tatsuya Iwasaki
    • C21 - METALLURGY OF IRON
  • Information Patent Grant

    Shaft part
    • Patent number 11,345,982
    • Issue date May 31, 2022
    • Nippon Steel Corporation
    • Tatsuya Iwasaki
    • C21 - METALLURGY OF IRON
  • Information Patent Grant

    Steel for machine structural use and method of producing same
    • Patent number 6,838,048
    • Issue date Jan 4, 2005
    • Sumitomo Metal Industries, Ltd.
    • Takayuki Nishi
    • C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
  • Information Patent Grant

    Steel for machine structural use
    • Patent number 6,797,231
    • Issue date Sep 28, 2004
    • Sumitomo Metal Industries, Ltd.
    • Naoki Matsui
    • C21 - METALLURGY OF IRON
  • Information Patent Grant

    Machine structural steel product
    • Patent number 6,475,305
    • Issue date Nov 5, 2002
    • Sumitomo Metal Industries, Ltd.
    • Koji Watari
    • 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...
  • Information Patent Grant

    Steel products excellent in machinability and machined steel parts
    • Patent number 5,922,145
    • Issue date Jul 13, 1999
    • Sumitomo Metal Industries, Ltd.
    • Koji Watari
    • C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...

Patents Applicationslast 30 patents

  • Information Patent Application

    SHAFT PART
    • Publication number 20210285078
    • Publication date Sep 16, 2021
    • NIPPON STEEL & SUMITOMO METAL CORPORATION
    • Tatsuya IWASAKI
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Application

    STEEL MATERIAL EXCELLENT IN ROLLING FATIGUE PROPERTY
    • Publication number 20200216937
    • Publication date Jul 9, 2020
    • NIPPON STEEL CORPORATION
    • Koji WATARI
    • C21 - METALLURGY OF IRON
  • Information Patent Application

    CARBURIZED SHAFT PART
    • Publication number 20200182286
    • Publication date Jun 11, 2020
    • NIPPON STEEL & SUMITOMO METAL CORPORATION
    • Tatsuya IWASAKI
    • C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...
  • Information Patent Application

    STEEL FOR INDUCTION HARDENING AND CRANKSHAFT MANUFACTURED BY USING...
    • Publication number 20140182414
    • Publication date Jul 3, 2014
    • NIPPON STEEL & SUMITOMO METAL CORPORATION
    • Kisung Kim
    • C21 - METALLURGY OF IRON
  • Information Patent Application

    Low-carbon free cutting steel
    • Publication number 20050025658
    • Publication date Feb 3, 2005
    • Sumitomo Metal Industries, Ltd.
    • Naoki Matsui
    • C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
  • Information Patent Application

    Cast steel and casting mold
    • Publication number 20040037731
    • Publication date Feb 26, 2004
    • Yasutaka Okada
    • C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
  • Information Patent Application

    Low-carbon free cutting steel
    • Publication number 20030152476
    • Publication date Aug 14, 2003
    • SUMITOMO METAL INDUSTRIES, LTD.
    • Naoki Matsui
    • C21 - METALLURGY OF IRON
  • Information Patent Application

    Steel for machine structural use
    • Publication number 20030138343
    • Publication date Jul 24, 2003
    • Naoki Matsui
    • C21 - METALLURGY OF IRON
  • Information Patent Application

    Steel for machine structural use and method of producing same
    • Publication number 20030084965
    • Publication date May 8, 2003
    • Sumitomo Metal Industries, Ltd.
    • Takayuki Nishi
    • C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...