Patents by Inventor Hideo Yoshikawa

Hideo Yoshikawa 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).

  • Photosensitive matter for electrophotography and method of the production thereof
    Patent number: 3948657
    Abstract: An electrophotographic photosensitive member is produced by a method in which a photoconductive layer is provided on a base, a polymeric solventless-type liquid resin adhesive is placed between said photoconductive layer and an overlying insulating layer and, by applying pressure on said insulating layer to spread said resin, said insulating layer is secured closely to the photoconductive layer through said adhesive layer. Fine grains of photoconductive material may be dispersed in said adhesive to provide a second photoconductive layer.This invention relates to a method for producing an electrophotographic photosensitive member and further to a method for obtaining a novel photosensitive member by employing said method.
    Type: Grant
    Filed: October 21, 1969
    Date of Patent: April 6, 1976
    Assignee: Canon Kabushiki Kaisha
    Inventors: Hideo Yoshikawa, Umi Tosaka, Takehiko Matsuo, Hirokazu Negishi