Patents by Inventor Junichiroh Hashimoto

Junichiroh Hashimoto 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).

  • Electrophotographic photoconductor layered element comprising salt material undercoat layer on conductive support
    Patent number: 4871635
    Abstract: A repeatedly usable electrophotographic photoconductor comprising (a) an electroconductive support, (b) an undercoat layer containing therein at least one salt selected from the group consisting of carboxylates, amino carboxylates, phosphates, polyphosphates, phosphites, phosphate derivatives, borates, sulfates and sulfites, and (c) a photoconductive layer, which layers are successively overlaid on the electroconductive support.
    Type: Grant
    Filed: May 13, 1988
    Date of Patent: October 3, 1989
    Assignee: Ricoh Company, Ltd.
    Inventors: Kenji Seki, Junichiroh Hashimoto, Michio Kimura, Hirofumi Yamanami, Satomi Mochizuki, Izumi Aiso