Patents by Inventor Toshio Seta

Toshio Seta 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 materials comprising nitro or cyano substituted phthalocyanine compounds for electrophotography
    Patent number: 4443528
    Abstract: A photoconductive material comprising a phthalocyanine and a phthalocyanine derivative in which the phthalocyanine molecule has benzene nuclei substituted with at least one member selected from nitro and cyano groups, and an electrophotographic plate comprising a photoconductive layer of the photoconductive material dispersed in a binder resin.
    Type: Grant
    Filed: March 21, 1983
    Date of Patent: April 17, 1984
    Assignee: Toyo Ink Manufacturing Co., Ltd.
    Inventors: Shinichi Tamura, Toshio Seta, Tsuneo Tanaka, Mititika Hikosaka
  • Thermogenic compositions
    Patent number: 4255157
    Abstract: A thermogenic composition comprising (1) at least one of alkali metal sulphides, polysulphides and hydrates thereof, (2) at least one of carbonaceous materials, (3) at least one of powdered iron, magnesium, aluminum and powdered alloys of these metals and, if desired, calcium oxide, the thermogenic composition being capable of heat generation when contacted with air or oxygen.
    Type: Grant
    Filed: September 18, 1979
    Date of Patent: March 10, 1981
    Assignee: Toyo Ink Manufacturing Co., Ltd.
    Inventors: Denjirou Yamaguchi, Noboru Mogi, Toshio Seta, Kunizo Oishi, Yoshihisa Fuzimori, Atsushi Suzuki