Patents by Inventor Takuji Fujimura

Takuji Fujimura 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).

  • CARBON BRUSH
    Publication number: 20120326081
    Abstract: A carbon brush is provided that improves motor efficiency and achieves a longer service life. A carbon brush (1) to be pressed against an electrically-conductive rotor (2) is characterized by containing mesocarbon powder and an aggregate material containing carbon as at least one component thereof. It is preferable that the mesocarbon powder have a substantially spherical shape, and it is also preferable that the mesocarbon powder has been subjected to a preheating treatment. In addition, it is preferable that the temperature of the preheating treatment be from 500° C. to 700° C.
    Type: Application
    Filed: March 25, 2011
    Publication date: December 27, 2012
    Applicant: TOYO TANSO CO., LTD.
    Inventors: Yoshikazu Kagawa, Takashi Maeda, Takuji Fujimura, Hidenori Shirakawa