Patents by Inventor Michiyasu Takagi

Michiyasu Takagi 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).

  • Patent number: 3962992
    Abstract: A device develops an electrostatically charged image formed on a photoelectroconductive layer with toner particles bearing a residual magnetization. The toner particles are provided on a vessel and in an alternating magnetic field to be rotated and repeatedly rebounded while charged, so as to be attracted onto the charged image.
    Type: Grant
    Filed: October 25, 1974
    Date of Patent: June 15, 1976
    Assignee: Tokyo Shibaura Electric Co., Ltd.
    Inventors: Michiyasu Takagi, Toshihiko Oguchi