Patents by Inventor Hidetsugu Takeuchi

Hidetsugu Takeuchi 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).

  • Method of producing yoke of rotary electric machine
    Patent number: 4389871
    Abstract: A method of producing a yoke of a rotary electric machine wherein a cylindrical blank is formed comprises extrusion forming a semi-finished article having abutting surfaces at axial opposite ends in the first step. The abutting surfaces are subjected to coining in the second step whereby the two abutting surfaces can have a spacing interval of high accuracy and can be disposed parallel to each other.
    Type: Grant
    Filed: November 12, 1980
    Date of Patent: June 28, 1983
    Assignee: Nippondenso Co., Ltd.
    Inventors: Hidetsugu Takeuchi, Tsuyoshi Muramatsu, Shozo Kato