TREA

Masakazu Ozaki

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  • Chiyoda-ku, JP
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Patents Grantslast 30 patents

  • Information Patent Grant

    Electric-resistance welded steel pipe
    • Patent number 10,738,366
    • Issue date Aug 11, 2020
    • Nippon Steel Corporation
    • Hideki Hamatani
    • B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
  • Information Patent Grant

    Electric resistance welded steel pipe for oil well
    • Patent number 10,196,702
    • Issue date Feb 5, 2019
    • Nippon Steel & Sumitomo Metal Corporation
    • Takaaki Fukushi
    • B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
  • Information Patent Grant

    Electric resistance welded steel pipe
    • Patent number 9,726,305
    • Issue date Aug 8, 2017
    • Nippon Steel & Sumitomo Metal Corporation
    • Yasuhiro Shinohara
    • B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR

Patents Applicationslast 30 patents

  • Information Patent Application

    OIL WELL PIPE FOR EXPANDABLE TUBULAR
    • Publication number 20190292637
    • Publication date Sep 26, 2019
    • NIPPON STEEL & SUMITOMO METAL CORPORATION
    • Kensuke NAGAI
    • C21 - METALLURGY OF IRON
  • Information Patent Application

    ELECTRIC RESISTANCE WELDED STEEL PIPE FOR OIL WELL
    • Publication number 20160230241
    • Publication date Aug 11, 2016
    • NIPPON STEEL & SUMITOMO METAL CORPORATION
    • Takaaki FUKUSHI
    • C21 - METALLURGY OF IRON
  • Information Patent Application

    ELECTRIC-RESISTANCE WELDED STEEL PIPE
    • Publication number 20160222480
    • Publication date Aug 4, 2016
    • NIPPON STEEL & SUMITOMO METAL CORPORATION
    • Hideki HAMATANI
    • C21 - METALLURGY OF IRON
  • Information Patent Application

    ELECTRIC RESISTANCE WELDED STEEL PIPE
    • Publication number 20150219249
    • Publication date Aug 6, 2015
    • NIPPON STEEL & SUMITOMO METAL CORPORATION
    • Yasuhiro Shinohara
    • C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...