TREA

Hideharu Koga

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  • Kawasaki-ku, JP
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Patents Grantslast 30 patents

  • Information Patent Grant

    Zinc-electroplated steel sheet and method thereof
    • Patent number 5,810,991
    • Issue date Sep 22, 1998
    • NKK Corporation
    • Takayuki Urakawa
    • C25 - ELECTROLYTIC OR ELECTROPHORETIC PROCESSES APPARATUS THEREFOR
  • Information Patent Grant

    Zinc-electroplated steel sheet
    • Patent number 5,650,238
    • Issue date Jul 22, 1997
    • NKK Corporation
    • Takayuki Urakawa
    • C25 - ELECTROLYTIC OR ELECTROPHORETIC PROCESSES APPARATUS THEREFOR