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Haruyuki Nagayoshi

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  • Kitakyushu, JP
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Patents Grantslast 30 patents

  • Information Patent Grant

    Pipe joint
    • Patent number 6,705,648
    • Issue date Mar 16, 2004
    • Nippon Steel Corporation
    • Kazushi Maruyama
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Joint for steel pipe having high galling resistance and surface tre...
    • Patent number 6,027,145
    • Issue date Feb 22, 2000
    • Nippon Steel Corporation
    • Eiji Tsuru
    • C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...
  • Information Patent Grant

    Method of cooling steel pipes
    • Patent number 4,421,575
    • Issue date Dec 20, 1983
    • Nippon Steel Corporation
    • Kyohei Murata
    • C21 - METALLURGY OF IRON