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Kouichi Watanabe

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  • Hitachi, JP
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Patents Grantslast 30 patents

  • Information Patent Grant

    Friction stir welding method
    • Patent number 6,595,403
    • Issue date Jul 22, 2003
    • Hitachi, Ltd.
    • Hisanori Okamura
    • B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
  • Information Patent Grant

    Friction stir welding apparatus and method
    • Patent number 6,299,050
    • Issue date Oct 9, 2001
    • Hitachi, Ltd.
    • Hisanori Okamura
    • B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR

Patents Applicationslast 30 patents

  • Information Patent Application

    Friction stir welding method
    • Publication number 20020027155
    • Publication date Mar 7, 2002
    • Hisanori Okamura
    • B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR