Patents by Inventor Tetsuro Kanemaru

Tetsuro Kanemaru 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 for electrophotography
    Patent number: 5049464
    Abstract: A photosensitive member for electrophotography, including an electroconductive substrate and a photosensitive layer disposed thereon, wherein the photosensitive layer comprises a substituted amino compound represented by the following general formula (I): ##STR1## wherein X denotes --O--, --S--, or ##STR2## R.sub.1 denotes a hydrogen atom, alkyl, alkoxyl or halogen atom; and R.sub.2, R.sub.3 and R.sub.4 respectively denote an alkyl, aralkyl, aryl or heterocyclic group.
    Type: Grant
    Filed: December 28, 1989
    Date of Patent: September 17, 1991
    Assignee: Canon Kabushiki Kaisha
    Inventors: Tetsuro Kanemaru, Toshihiro Kikuchi, Akihiro Senoo, Ryoji Yashiro
  • Electrophotographic photosensitive member with disazo pigment
    Patent number: 4963450
    Abstract: A laminated layer type electrophotographic photosensitive member has a charge generation layer and a charge transport layer on an electroconductive support, characterized in that the charge generation layer has at least one of disazo pigments represented by the formulae (1) and (2).
    Type: Grant
    Filed: January 13, 1989
    Date of Patent: October 16, 1990
    Assignee: Canon Kabushiki Kaisha
    Inventors: Hajime Miyazaki, Shintetsu Go, Akihiro Senoo, Kazushi Iuchi, Tetsuro Kanemaru
  • Electrophotographic photosensitive member containing disazo pigment having coupler residue
    Patent number: 4942106
    Abstract: An electrophotographic photosensitive member has a photosensitive layer on an electroconductive support, characterized in that said photosensitive layer contains a disazo pigment of the formula (1), wherein A.sub.1 and A.sub.2, which may be either the same or different, each represent a coupler residue having a phenolic hydroxyl group.
    Type: Grant
    Filed: December 29, 1988
    Date of Patent: July 17, 1990
    Assignee: Canon Kabushiki Kaisha
    Inventors: Hideyuki Takai, Tetsuro Kanemaru