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Hiroki Miyawaki

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  • Kitakyushu, JP
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Patents Grantslast 30 patents

  • Information Patent Grant

    Production method of strong and tough thick steel plate
    • Patent number 5,389,164
    • Issue date Feb 14, 1995
    • Nippon Steel Corporation
    • Atsuhiko Yoshie
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
  • Information Patent Grant

    Method of cooling hot-rolled steel plate
    • Patent number 4,785,646
    • Issue date Nov 22, 1988
    • Nippon Steel Corporation
    • Hiroshi Uekaji
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
  • Information Patent Grant

    Method of cooling hot steel plates
    • Patent number 4,596,615
    • Issue date Jun 24, 1986
    • Nippon Steel Corporation
    • Katsushige Matsuzaki
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...