Patents by Inventor Hirotsugu Nomaguchi

Hirotsugu Nomaguchi 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).

  • Photoconductive composition sensitized by a thiobarbituric acid derivative
    Patent number: 4389477
    Abstract: A photoconductive composition comprising a photoconductive substance and a thiobarbituric acid derivative, and an electrophotographic light-sensitive medium comprising a support having a layer of the photoconductive composition thereon.
    Type: Grant
    Filed: April 21, 1981
    Date of Patent: June 21, 1983
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Syunichi Kondo, Hirotsugu Nomaguchi, Hideo Sato
  • Process for forming an electrically conductive film
    Patent number: 4363829
    Abstract: A process for forming an electrically conductive film by exposing to actinic radiation a coating that contains a nonionic electron donating compound and a halogen-substituted polymer having film-forming properties on a substrate, thereby forming a charge transfer complex in said halogen-substituted polymer in said coating.
    Type: Grant
    Filed: August 27, 1980
    Date of Patent: December 14, 1982
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Osamu Seshimoto, Hirotsugu Nomaguchi, Seiji Horie, Hideo Sato, Masaaki Takimoto, Kikuo Kubotera
  • Photoconductive composition with 5-nitrofurfural derivative sensitizer
    Patent number: 4358521
    Abstract: Photoconductive compositions and electrophotographic photoreceptive materials are described containing a photo-conductive substance and a 5-nitrofurfural derivative represented by formula (1) ##STR1## wherein A represents atoms which form, together with the carbon atom, a moiety represented by one of formulae (2) to (10) ##STR2## wherein R represents a straight or branched chain alkyl group containing from 1 to 12 carbon atoms, X represents a group having a Hammett .sigma. value of at least 0.
    Type: Grant
    Filed: May 8, 1981
    Date of Patent: November 9, 1982
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Syunichi Kondo, Hirotsugu Nomaguchi, Hideo Sato
  • Photoconductive compositions and electrophotographic light-sensitive materials using said compositions
    Patent number: 4349618
    Abstract: A photoconductive composition comprising a photoconductive substance and a thiobarbituric acid derivative, and an electrophotographic light-sensitive material comprising a support having a layer of the photoconductive composition thereon.
    Type: Grant
    Filed: July 29, 1981
    Date of Patent: September 14, 1982
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Syunichi Kondo, Hirotsugu Nomaguchi, Hideo Sato