Patents by Inventor Motohiro Takeshima

Motohiro Takeshima 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).

  • Patent number: 6001520
    Abstract: An electrophotographic photosensitive body has a charge generating layer and a charge transporting layer on a conductive substrate. The charge transporting layer contains a zinc carboxylate compound expressed by the following General Formula (I):(Ar--COO.sup.-)(R--COO.sup.-)Zn.sup.2+ [I]wherein:Ar is a substituted or unsubstituted aryl group andR is a substituted or unsubstituted alkenyl groupA method for the manufacture of the electrophotographic photosensitive body is also disclosed.
    Type: Grant
    Filed: January 27, 1999
    Date of Patent: December 14, 1999
    Assignee: Fuji Electric Co., Ltd.
    Inventors: Yoichi Nakamura, Motohiro Takeshima, Akira Ootani, Osamu Nabeta
  • Patent number: 5935746
    Abstract: A photosensitive body comprises a conductive substrate; a photosensitive layer on the conductive substrate, the photosensitive layer includes a charge transport compound wherein the charge transport compound is described by a general formula (I): ##STR1## wherein A is a phenyl or naphthyl group; each of R.sup.1, R.sup.2, R.sup.3, and R.sup.4 is a hydrogen atom, a halogen atom, an alkyl group with or without substitution, an alkoxy group, an alkylamino group, a nitro group, a cyano group, an aryl group with or without substitution, or a heterocyclic group with or without substitution; and each of R.sup.5 and R.sup.6 is a cyano group or an alkoxycarbonyl group.
    Type: Grant
    Filed: June 19, 1997
    Date of Patent: August 10, 1999
    Assignee: Fuji Electric Co., Ltd.
    Inventors: Masami Kuroda, Motohiro Takeshima, Kei Yamaguchi