Patents by Inventor Shigeko Taguchi

Shigeko Taguchi 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).

  • Lubricant oil composition comprising borated cyclic carboxylic acid imide
    Patent number: 6184185
    Abstract: The present invention provides a lubricant oil composition for an automatic and continuously variable transmission with a built-in torque converter equipped with a lock-up clutch, which is incorporated, in the base oil, with a compound containing at least one type of cyclic carboxylic acid imide having boron in the molecule and substituted by an alkyl or alkenyl group, wherein the cyclic carboxylic acid imide is contained at 0.1 to 12 wt % based on the whole composition.
    Type: Grant
    Filed: April 2, 1999
    Date of Patent: February 6, 2001
    Assignee: Tonen Corporation
    Inventors: Shigeko Taguchi, Hiroshi Nakanishi, Takanori Kugimiya