Patents by Inventor Yoshihide Fujimaki

Yoshihide Fujimaki 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 produced by sublimation
    Patent number: 4431722
    Abstract: Disclosed is a photosensitive element for electrophotography comprised of a layered structure having a polycyclic quinone pigment dispersed in an organic resin binder as a charge generating layer and an organic charge transport layer mixed with a resin binder.
    Type: Grant
    Filed: October 15, 1981
    Date of Patent: February 14, 1984
    Assignee: Konishiroku Photo Industry Co., Ltd.
    Inventors: Yoshiaki Takei, Yoshihide Fujimaki, Naoko Akashi, Hiroyuki Nomori
  • Electrophotographic light-sensitive element
    Patent number: 4415641
    Abstract: An electrophotographic light-sensitive element comprising a conductive support which supports a light-sensitive layer containing a carbazole derivative of the formula: ##STR1## wherein R.sub.1 is an aryl group, R.sub.2 is hydrogen, a halogen, an alkyl, an alkoxy, an amino or hydroxy group, and R.sub.3 is an aryl, or a heterocyclic group.
    Type: Grant
    Filed: March 2, 1982
    Date of Patent: November 15, 1983
    Assignee: Konishiroku Photo Industry Co., Ltd.
    Inventors: Satoshi Goto, Akira Kinoshita, Yoshiaki Takei, Yoshihide Fujimaki
  • Electrophotographic element with fluorenylidene hydrazone compounds
    Patent number: 4415640
    Abstract: Electrophotographic light-sensitive elements containing substituted or unsubstituted fluorenone hydrazones as charge generating or charge transport materials are described.
    Type: Grant
    Filed: February 18, 1982
    Date of Patent: November 15, 1983
    Assignee: Konishiroku Photo Industry Co., Ltd.
    Inventors: Satoshi Goto, Kiyoshi Sawada, Osamu Sasaki, Akira Kinoshita, Yoshiaki Takei, Yoshihide Fujimaki