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Yoko Matsuyama

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Patents Grantslast 30 patents

  • Information Patent Grant

    Lubricating oil composition comprising acylated bissuccinimide, zin...
    • Patent number 6,306,801
    • Issue date Oct 23, 2001
    • Nippon Mitsubishi Oil Corporation
    • Kazuhiro Yagishita
    • C10 - PETROLEUM, GAS OR COKE INDUSTRIES TECHNICAL GASES CONTAINING CARBON MON...
  • Information Patent Grant

    Lubricating oil composition
    • Patent number 5,912,212
    • Issue date Jun 15, 1999
    • Nippon Oil Co., Ltd.
    • Jinichi Igarashi
    • C10 - PETROLEUM, GAS OR COKE INDUSTRIES TECHNICAL GASES CONTAINING CARBON MON...
  • Information Patent Grant

    Lubricating oil compositions
    • Patent number 5,658,866
    • Issue date Aug 19, 1997
    • Nippon Oil Co., Ltd.
    • Toshio Yoshida
    • C10 - PETROLEUM, GAS OR COKE INDUSTRIES TECHNICAL GASES CONTAINING CARBON MON...
  • Information Patent Grant

    Oxidation-inhibitive lubricating oil composition
    • Patent number 5,658,865
    • Issue date Aug 19, 1997
    • Nippon Oil Co., Ltd.
    • Toshio Yoshida
    • C10 - PETROLEUM, GAS OR COKE INDUSTRIES TECHNICAL GASES CONTAINING CARBON MON...