Patents by Inventor Lyon S. Pu

Lyon S. Pu 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 element for electrophotography
    Patent number: 4346159
    Abstract: A photosensitive element for electrophotography comprising an electrically conductive backing member, a photoconductive layer overlying the backing member, and a transparent electrically insulating surface layer on the photoconductive layer, wherein the transparent electrically insulating surface layer contains a charge-retentive material or a layer of a charge-retentive material is interposed between the photoconductive layer and the transparent electrically insulating surface layer so as to form a charge-retentive layer in the boundary between the photoconductive layer and the transparent electrically insulating layer.
    Type: Grant
    Filed: February 14, 1978
    Date of Patent: August 24, 1982
    Assignee: Fuji Xerox Co., Ltd.
    Inventors: Shigeru Sadamatsu, Lyon S. Pu, Yoshihisa Ishikawa