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Akira Niizuma

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  • Ichidawa, JP
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Patents Grantslast 30 patents

  • Information Patent Grant

    Acidic zinc phosphate solution and method
    • Patent number 4,153,479
    • Issue date May 8, 1979
    • Oxy Metal Industries Corporation
    • Yukihiko Ayano
    • C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...