Patents by Inventor Yukako Nojima

Yukako Nojima 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).

  • Miniature electric motor with rubber stator magnet
    Patent number: 5204571
    Abstract: A miniature electric motor having a stator composed of a strip of rubber magnet having a varying width. The stator strip has; polarized regions of wide width, non-polarized regions of narrow width, and regions which bridge said polarized regions having a continuously varying width. The periphery of the polarized and non-polarized regions of the stator strip contains indents and protrusions to improve the cogging characteristics of the motor.
    Type: Grant
    Filed: May 22, 1991
    Date of Patent: April 20, 1993
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Yukako Nojima, Shigenori Uda, Hiromi Suyama, Masanori Onda