Patents by Inventor Toshikazu Tsukada

Toshikazu Tsukada has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Lubricating oil composition containing friction modifier and corrosion inhibitor
    Patent number: 5364545
    Abstract: An improved lubricating oil composition having a low coefficient of friction and reduced copper corrosion comprising (a) a lubricating oil basestock, (b) from 0.01 to 10% by weight, based on the oil composition, of at least one organomolybdenum compound selected from the group consisting of oxymolybdenum monoglyceride and oxymolybdenum diethylatoamide; and (c) from 0.5 to 7% by weight, based on the oil composition, of at least one organozinc compound selected from the group consisting of zinc dithiophosphate and zinc dithiocarbamate.
    Type: Grant
    Filed: July 9, 1993
    Date of Patent: November 15, 1994
    Assignee: Tonen Corporation
    Inventors: Katsuya Arai, Toshikazu Tsukada, Hirotaka Tomizawa
  • Lubricating oil composition containing friction modifier and corrosion inhibitor
    Patent number: 5356547
    Abstract: An improved lubricating oil composition having a low coefficient of friction and reduced copper corrosion comprising (a) lubricating oil basestock, (b) 0.01 to less than 0.2% by weight, based on the oil composition, of at least one organomolybdenum compound selected from the group consisting of sulfurized oxymolybdenum dithiocarbamate and sulfurized oxymolybdenum organophosphorodithioate; and (c) from 0.5 to 7% by weight, based on the oil composition, of at least one organozinc compound selected from the group consisting of zinc dithiophosphate and zinc dithiocarbamate.
    Type: Grant
    Filed: July 9, 1993
    Date of Patent: October 18, 1994
    Assignee: Exxon Research & Engineering Co.
    Inventors: Katsuya Arai, Toshikazu Tsukada, Hirotaka Tomizawa