Patents by Inventor Masahiko Tsukahara

Masahiko Tsukahara 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).

  • Starter
    Patent number: 6382037
    Abstract: To prevent an attracting force to the plunger from becoming insufficient, at least one of an output shaft and a thrust spline is formed from magnetic material having a lower relative permeability than iron.
    Type: Grant
    Filed: December 8, 1999
    Date of Patent: May 7, 2002
    Assignee: Mitsubishi Denki Kabushiki Kaisha
    Inventors: Takehiro Kobayashi, Shigeru Shiroyama, Akira Kuragaki, Koichiro Kamei, Hidekazu Katayama, Masahiko Tsukahara, Tadanori Yamaguchi, Jiro Hirao