Patents by Inventor Yoshida Masazumi

Yoshida Masazumi 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 member
    Patent number: 4409311
    Abstract: A hydrogen containing amorphous silicon photoconductive layer exhibits infrared absorption peaks between wavenumber of 2000 cm.sup.-1 where Si-H bonds are predominant and wavenumber of 2090 cm.sup.-1 where Si-H.sub.2 bonds are predominant and has an absorption coefficient ratio of the peaks of 2090 cm.sup.-1 to 2000 cm.sup.-1 of about 0.2 to 1.7. Preferably, the photoconductive layer is formed by a glow discharge decomposition and may contain small amount of oxygen and 10 to 20,000 ppm of Group IIIA impurity of the Periodic Table.
    Type: Grant
    Filed: March 8, 1982
    Date of Patent: October 11, 1983
    Assignees: Minolta Camera Kabushiki Kaisha, Takao Kawamura, Kyoto Ceramic Co., Ltd.
    Inventors: Takao Kawamura, Yoshida Masazumi