TREA

Harumichi Watanabe

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  • Yokohama, JP
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Patents Grantslast 30 patents

  • Information Patent Grant

    Process for preparing oil-soluble nitrogen-containing compounds
    • Patent number 4,992,150
    • Issue date Feb 12, 1991
    • Nippon Oil Co, Ltd.
    • Jinichi Igarashi
    • C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
  • Information Patent Grant

    Synthetic lubricating oils
    • Patent number 4,737,297
    • Issue date Apr 12, 1988
    • Nippon Oil Co., Ltd.
    • Toshio Yoshida
    • C07 - ORGANIC CHEMISTRY
  • Information Patent Grant

    Synthetic oils
    • Patent number 4,714,794
    • Issue date Dec 22, 1987
    • Nippon Oil Co., Ltd.
    • Toshio Yoshida
    • C10 - PETROLEUM, GAS OR COKE INDUSTRIES TECHNICAL GASES CONTAINING CARBON MON...
  • Information Patent Grant

    Thermal medium oils
    • Patent number 4,665,275
    • Issue date May 12, 1987
    • Nippon Oil Co., Ltd.
    • Toshio Yoshida
    • C10 - PETROLEUM, GAS OR COKE INDUSTRIES TECHNICAL GASES CONTAINING CARBON MON...
  • Information Patent Grant

    Metal deactivator and composition containing same
    • Patent number 4,392,968
    • Issue date Jul 12, 1983
    • Nippon Oil Company, Limited
    • Noboru Ishida
    • C07 - ORGANIC CHEMISTRY