TREA

Hatsuhiko Oikawa

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  • Aichi, JP
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Patents Grantslast 30 patents

  • Information Patent Grant

    Method for surface treatment
    • Patent number 4,794,044
    • Issue date Dec 27, 1988
    • Kabushiki Kaisha Toyota Chuo Kenkyusho
    • Tohru Arai
    • C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES
  • Information Patent Grant

    Method for surface treatment and treating material therefor
    • Patent number 4,778,540
    • Issue date Oct 18, 1988
    • Kabushiki Kaisha Toyota Chuo Kenkyusho
    • Tohru Arai
    • C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...