Patents by Inventor Kouichi Yokota

Kouichi Yokota 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).

  • Publication number: 20040048209
    Abstract: A silver halide photographic light-sensitive material having one or more layers including at least one light-sensitive silver halide emulsion layer on a support, wherein at least one of the layers contains at least one compound represented by R1-Z1 (R1 is an unsubstituted or hydroxy-substituted alkyl having 6-24 carbon atoms or an unsubstituted alkenyl group having 6-24 carbon atoms, and Z1 is OSO3M or SO3M, where M is a cation) and a fluorine-containing surfactant. There is provided a silver halide photographic light-sensitive material that shows superior antistatic property and can be stably produced.
    Type: Application
    Filed: May 2, 2003
    Publication date: March 11, 2004
    Applicant: FUJI PHOTO FILM CO., LTD.
    Inventors: Yoshihisa Tsukada, Terukazu Yanagi, Kouichi Yokota
  • Publication number: 20040002024
    Abstract: A silver halide photographic light-sensitive material having one or more layers including at least one light-sensitive silver halide emulsion layer on a support, wherein any of the layers formed on the support contains a compound represented by the following formula (1) and a fluorine-containing surfactant (in the formula (1), R1 represents an alkyl group or alkenyl group having 6-25 carbon atoms, ml represents an integer of 0-30, n1 represents an integer of 0-4, a represents 0 or 1, and Z′ represents OSO3M or SO3M, where M represents a cation). There is provided a silver halide photographic light-sensitive material that shows superior antistatic property and can be stably produced.
    Type: Application
    Filed: March 13, 2003
    Publication date: January 1, 2004
    Inventors: Terukazu Yanagi, Yoshihisa Tsukada, Kouichi Yokota, Shinichi Ichikawa, Katsuhiko Kanazawa