TREA

Shoji Okamoto

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  • Yokohama, JP
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Patents Grantslast 30 patents

  • Information Patent Grant

    Cold rolling oil for steel sheet
    • Patent number 4,666,617
    • Issue date May 19, 1987
    • Nippon Kokan Kabushiki Kaisha
    • Toshitake Katayama
    • C10 - PETROLEUM, GAS OR COKE INDUSTRIES TECHNICAL GASES CONTAINING CARBON MON...
  • Information Patent Grant

    Cold rolling oil for steel sheet
    • Patent number 4,585,564
    • Issue date Apr 29, 1986
    • Nippon Kokan Kabushiki Kaisha
    • Eisuke Tohmata
    • C10 - PETROLEUM, GAS OR COKE INDUSTRIES TECHNICAL GASES CONTAINING CARBON MON...