Patents by Inventor Motoyuki Osuga

Motoyuki Osuga 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).

  • Buzzer
    Patent number: 4050066
    Abstract: A buzzer comprises an annular magnet, a coil disposed at the inside of the magnet, a vibration plate disposed above said magnet, a core inserted into the central opening of said coil and with its one end facing said vibration plate, a case and a yoke. Said magnet said vibration plate and said yoke are held by the magnetic attraction of the magnet.
    Type: Grant
    Filed: October 6, 1976
    Date of Patent: September 20, 1977
    Assignee: Kabushiki Kaisha Seikosha
    Inventors: Takeshi Yanagisawa, Motoyuki Osuga