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Hiroyuki Nagayama

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  • Chiyoda-ku, JP
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Patents Grantslast 30 patents

Patents Applicationslast 30 patents

  • Information Patent Application

    GIRTH WELDED JOINT OF STEEL PIPE
    • Publication number 20240353033
    • Publication date Oct 24, 2024
    • NIPPON STEEL CORPORATION
    • Akira DOI
    • C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
  • Information Patent Application

    SEAMLESS STEEL PIPE AND METHOD FOR PRODUCING SAME
    • Publication number 20190040480
    • Publication date Feb 7, 2019
    • NIPPON STEEL & SUMITOMO METAL CORPORATION
    • Yuji ARAI
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Application

    SEAMLESS STEEL PIPE AND METHOD FOR PRODUCING SAME
    • Publication number 20150315685
    • Publication date Nov 5, 2015
    • NIPPON STEEL & SUMITOMO METAL CORPORATION
    • Yuji ARAI
    • C21 - METALLURGY OF IRON
  • Information Patent Application

    WELDED JOINT OF DUPLEX STAINLESS STEEL
    • Publication number 20130316193
    • Publication date Nov 28, 2013
    • Hiroyuki Nagayama
    • B32 - LAYERED PRODUCTS
  • Information Patent Application

    DUPLEX STAINLESS STEEL AND PRODUCTION METHOD THEREFOR
    • Publication number 20130312880
    • Publication date Nov 28, 2013
    • NIPPON STEEL & SUMITOMO METAL CORORATION
    • Daisuke Motoya
    • C21 - METALLURGY OF IRON
  • Information Patent Application

    DUPLEX STAINLESS STEEL
    • Publication number 20130315776
    • Publication date Nov 28, 2013
    • NIPPON STEEL & SUMITOMO METAL CORPORATION
    • Kenta Yamada
    • C21 - METALLURGY OF IRON
  • Information Patent Application

    Methane/methanol producing system
    • Publication number 20030006129
    • Publication date Jan 9, 2003
    • Kazuo Imasaki
    • C07 - ORGANIC CHEMISTRY