Patents by Inventor Tomotusgu Shiroi

Tomotusgu Shiroi 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 for automatic transmissions
    Patent number: 7407917
    Abstract: An additive compound comprising a non-borated and/or borated reaction product, in which the reaction product is obtained by reacting a linear or branched, saturated or unsaturated monovalent aliphatic acid having 8 to 22 carbon atoms, urea, and polyalkylenepolyamine, when employed in a lubricating oil composition is favorably employable as an automatic transmission fluid of internal combustion engines.
    Type: Grant
    Filed: November 16, 2004
    Date of Patent: August 5, 2008
    Assignee: Chevron Oronite Company LLC
    Inventors: Michio Shiga, Tomotusgu Shiroi
  • Lubricating oil composition for automatic transmissions
    Publication number: 20050124506
    Abstract: An additive compound comprising a non-borated and/or borated reaction product, in which the reaction product is obtained by reacting a linear or branched, saturated or unsaturated monovalent aliphatic acid having 8 to 22 carbon atoms, urea, and polyalkylenepolyamine, when employed in a lubricating oil composition is favorably employable as an automatic transmission fluid of internal combustion engines.
    Type: Application
    Filed: November 16, 2004
    Publication date: June 9, 2005
    Inventors: Michio Shiga, Tomotusgu Shiroi