Patents by Inventor Masazumi Yoshida

Masazumi Yoshida 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: 4451546
    Abstract: The invention disclosed relates to a photosensitive member having excellent photosensitivity characteristics in the visible light region as well as in the near infrared region. The photosensitive member according to the invention comprises an electrically-conductive substrate, an amorphous silicon semiconductor layer, an amorphous silicon-germanium photoconductive layer formed on the semiconductor layer, and an amorphous silicon photoconductive layer formed the amorphous silicon-germanium photoconductive layer.
    Type: Grant
    Filed: March 7, 1983
    Date of Patent: May 29, 1984
    Assignees: Minolta Camera Kabushiki Kaisha, Takao Kawamura, Kyocera Corporation
    Inventors: Takao Kawamura, Masazumi Yoshida
  • Spark-plug for automobile internal combustion engine
    Patent number: 4109633
    Abstract: Improved spark-plugs for automobile internal combustion engines are made in a manner that thermal conductance (G) from flame nucleus to the electrodes is made as small as possible through decreasing of fluid resistance with respect to minute flame nucleus gas flow in the discharge, the fluid resistance being made small by making the discharge electrodes thin or making at least one of its discharge electrodes streamlined. The spark-plugs are capable of igniting and burning such lean gas mixture of 1.25 or more in excess air ratio (F).
    Type: Grant
    Filed: September 7, 1976
    Date of Patent: August 29, 1978
    Assignee: New Cosmos Electric Company Limited
    Inventors: Hiroyuki Mitsudo, Masazumi Yoshida