Patents by Inventor Shuzo Otsuki

Shuzo Otsuki 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).

  • Permanent magnet and magnetization apparatus for producing the permanent magnet
    Patent number: 5200729
    Abstract: Disclosed is a permanent magnet which is suitable for use for a field system of an electric motor or the like and which is constituted by a single piece of magnetic material in which S and N poles are alternately continuously formed through non-magnetic flux regions or weak magnetic flux regions interposed therebetween, and further disclosed is a magnetization apparatus for magnetizing such a permanent magnet.
    Type: Grant
    Filed: February 7, 1990
    Date of Patent: April 6, 1993
    Assignee: Yamamoto Electric Corporation
    Inventors: Katsuji Soeda, Shuzo Otsuki, Masaru Wada