Patents by Inventor Kazunori Mishima

Kazunori Mishima 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).

  • Stepping motor
    Patent number: 6670731
    Abstract: A stepping motor including a rotor having a plurality of magnetic poles, one stator base arranged near the rotor, a pair of magnetic yokes fixed on the stator base and arranged to face the magnetic poles of the rotor, a pair of excitation coils for exciting the pair of magnetic yokes respectively in response to drive pulses which have phase difference, and a pair of stator magnetic polar portions integrally formed with the stator base. The stepping motor is constructed to form magnetic paths together with the number of magnetic turns of the excitation coils without increasing the size of the magnetic yokes, thereby enhancing operations and reliability.
    Type: Grant
    Filed: March 25, 2002
    Date of Patent: December 30, 2003
    Assignee: TDK Corporation
    Inventors: Tsutomu Kotani, Kazunori Mishima
  • Stepping motor
    Publication number: 20020135243
    Abstract: A stepping motor includes:
    Type: Application
    Filed: March 25, 2002
    Publication date: September 26, 2002
    Applicant: TDK CORPORATION
    Inventors: Tsutomu Kotani, Kazunori Mishima