Patents by Inventor Hiroshi Yasuba

Hiroshi Yasuba 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).

  • Method of improving the reusability of an electrophotographic photosensitive plate
    Patent number: 3956525
    Abstract: A method of improving the reusability, in a liquid electrophoretic development process, of an electrophotographic photosensitive plate which has, in the following recited order, a base which is a conducting substrate, a thin vitreous sensitizing layer including selenium, and an organic carrier transporting layer which is polyvinylcarbazole or a polyvinylcarbazole derivative with at least one inactive additive. The main feature of the method is to apply, by glow discharge in a vacuum chamber, a top organic film on the surface of the organic carrier transporting layer.
    Type: Grant
    Filed: June 14, 1974
    Date of Patent: May 11, 1976
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventor: Hiroshi Yasuba