Patents by Inventor Naoto Oshima

Naoto Oshima 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: 7674575
    Abstract: A silver halide color photosensitive material for being subjected to a color development within nine seconds of being imagewise exposed, and comprising a support and a photograph constitution layer provided on the support, the photograph constitution layer containing at least one layer that comprises a yellow dye-forming coupler, at least one layer that comprises a magenta dye-forming coupler, at least one layer that comprises a cyan dye-forming coupler, and at least one non-photosensitive hydrophilic colloid layer. The coupler-comprising layers respectively include silver halide emulsions, and at least one of the silver halide emulsions has the characteristics of: (i) a silver chloride content of 90 mol % or more; and (ii) containing at least one specific metal complexes. The color development is preferably completed within 28 seconds.
    Type: Grant
    Filed: June 21, 2004
    Date of Patent: March 9, 2010
    Assignee: FUJIFILM Corporation
    Inventors: Naoto Oshima, Tadanobu Sato, Akito Yokozawa
  • Patent number: 6830880
    Abstract: A silver halide color photosensitive material for being subjected to a color development within nine seconds of being imagewise exposed, and comprising a support and a photograph constitution layer provided on the support, the photograph constitution layer containing at least one layer that comprises a yellow dye-forming coupler, at least one layer that comprises a magenta dye-forming coupler, at least one layer that comprises a cyan dye-forming coupler, and at least one non-photosensitive hydrophilic colloid layer. The coupler-comprising layers respectively include silver halide emulsions, and at least one of the silver halide emulsions has the characteristics of: (i) a silver halide content of 90 mol % or more; and (ii) containing at least one specific metal complexes. The color development is preferably completed within 28 seconds.
    Type: Grant
    Filed: June 30, 2003
    Date of Patent: December 14, 2004
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Naoto Oshima, Tadanobu Sato, Akito Yokozawa
  • Publication number: 20040234907
    Abstract: A silver halide color photosensitive material for being subjected to a color development within nine seconds of being imagewise exposed, and comprising a support and a photograph constitution layer provided on the support, the photograph constitution layer containing at least one layer that comprises a yellow dye-forming coupler, at least one layer that comprises a magenta dye-forming coupler, at least one layer that comprises a cyan dye-forming coupler, and at least one non-photosensitive hydrophilic colloid layer. The coupler-comprising layers respectively include silver halide emulsions, and at least one of the silver halide emulsions has the characteristics of: (i) a silver halide content of 90 mol % or more; and (ii) containing at least one specific metal complexes. The color development is preferably completed within 28 seconds.
    Type: Application
    Filed: June 21, 2004
    Publication date: November 25, 2004
    Applicant: FUJI PHOTO FILM CO., LTD.
    Inventors: Naoto Oshima, Tadanobu Sato, Akito Yokozawa
  • Publication number: 20040023165
    Abstract: A silver halide color photosensitive material for being subjected to a color development within nine seconds of being imagewise exposed, and comprising a support and a photograph constitution layer provided on the support, the photograph constitution layer containing at least one layer that comprises a yellow dye-forming coupler, at least one layer that comprises a magenta dye-forming coupler, at least one layer that comprises a cyan dye-forming coupler, and at least one non-photosensitive hydrophilic colloid layer. The coupler-comprising layers respectively include silver halide emulsions, and at least one of the silver halide emulsions has the characteristics of: (i) a silver halide content of 90 mol % or more; and (ii) containing at least one specific metal complexes. The color development is preferably completed within 28 seconds.
    Type: Application
    Filed: June 30, 2003
    Publication date: February 5, 2004
    Applicant: FUJI PHOTO FILM CO., LTD.
    Inventors: Naoto Oshima, Tadanobu Sato, Akito Yokozawa
  • Patent number: 5916742
    Abstract: A surface latent image type silver halide photographic material comprises a support and at least one surface latent image type silver halide emulsion layer provided thereon. Surface latent image type silver halide grains of the emulsion layer contain a cyano-chromium-complex ion represented by the formula (I):?Cr(CN).sub.6-n L.sub.n !.sup.m- (I)wherein L is H.sub.2 O or OH; n is 0 or 1; and m is 3 or 4.
    Type: Grant
    Filed: May 30, 1997
    Date of Patent: June 29, 1999
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Shinji Ikari, Naoto Oshima
  • Patent number: 5378594
    Abstract: There is disclosed a silver halide color photographic material comprising at least one sparingly water-soluble epoxy compound represented by formula (I), (II), or (III) and a silver halide emulsion layer which comprises high-silver-chloride grains containing metal ions and/or having silver bromide localized phases on the surface thereof, and/or that have been sensitized by a gold compound: ##STR1## wherein R.sup.1, R.sup.2, and R.sup.3 each represent a substituted or unsubstituted alkyl group or a halogen atom; L.sup.1 and L.sup.2 each represent a divalent aliphatic group, which may be substituted or unsubstituted; M.sup.1 represents an oxygen atom or a nitrogen atom; A represents a polyvalent linking group; a, b, and c each are an integer of 0 to 4; x and y each are an actual number of 0 to 20; l is 1 or 2; and m represents an integer of 2 to 4.
    Type: Grant
    Filed: September 17, 1991
    Date of Patent: January 3, 1995
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Kentaro Okazaki, Naoto Oshima, Kiyoto Takada