TREA

Yuji Matsumura

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  • Nishinomiya, JP
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Patents Grantslast 30 patents

  • Information Patent Grant

    Pitch fluoride
    • Patent number 4,931,163
    • Issue date Jun 5, 1990
    • Osaka Gas Co, Ltd.
    • Nobuatsu Watanabe
    • C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...