Patents by Inventor Shigeaki Ohtani

Shigeaki Ohtani 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: 20070200147
    Abstract: A method for manufacturing an optical film comprising a transparent substrate and at least one functional layer on or above the transparent substrate, wherein said at least one functional layer to be laminated on the transparent substrate is formed by a layer-forming method comprising the following steps (1) and (2): (1) step of applying a coated layer on the transparent substrate, and (2) step of curing the coated layer by irradiating ionizing radiation in an oxygen environment in which the oxygen concentration is lower than an atmospheric oxygen concentration.
    Type: Application
    Filed: July 28, 2005
    Publication date: August 30, 2007
    Applicant: FUJIFILM Corporation
    Inventors: Shigeaki Ohtani, Makoto Satoh, Toshihiko Maekawa, Mayumi Suzuki, Yuuichi Fukushige
  • Patent number: 6043020
    Abstract: A silver halide color photographic material is disclosed which comprises a support having provided thereon at least one silver halide emulsion layer containing a yellow dye-forming coupler, at least one silver halide emulsion layer containing a magenta dye-forming coupler, and at least one silver halide emulsion layer containing a cyan-dye forming coupler, wherein at least one of said at least one emulsion layers (i) contains silver chloride or silver chlorobromide emulsion grains having a silver chloride content of 95 mol % or more and substantially free of silver iodide, and (ii) has a ratio of point gamma I to point gamma II of 0.7 to 1.3, wherein when points giving densities of 1.0 and 1.5 on a characteristic curve obtained by an exposure time of 10.sup.-4 second are joined by a straight line, point gamma I is a point gamma on the characteristic curve, at a density which is 1.5 or more and which satisfies the condition where the value of logE on the characteristic curve is larger by 0.
    Type: Grant
    Filed: June 27, 1997
    Date of Patent: March 28, 2000
    Assignee: Fuji Photo Film Co., Ltd.
    Inventor: Shigeaki Ohtani
  • Patent number: 5561040
    Abstract: There is provided a method for forming an image, which comprises processing a silver halide color photographic material that has a high-silver-chloride silver halide emulsion and which contains in the photographic material a nitrogen-containing heterocyclic compound, the solubility product of which for the silver salt is in a limited range, with a color developer containing chloride ions and bromide ions in a limited concentration, respectively. The method is excellent in forming an image that can be performed rapidly, and is high in sensitivity, in prevention of processing color-mixing, and in less fluctuation of the photographic quality involved in continuous processing.
    Type: Grant
    Filed: May 26, 1995
    Date of Patent: October 1, 1996
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Kiyoshi Kawai, Shigeaki Ohtani
  • Patent number: 5391471
    Abstract: A novel silver halide color photographic material comprising on a support at least one light-sensitive emulsion layer and at least one hydrophilic colloidal layer containing a white pigment between said support and said light-sensitive emulsion layer is provided, wherein (i) said white pigment is incorporated in such an amount that the coated amount thereof in said hydrophilic colloidal layer is in the range of 2 g/m.sup.
    Type: Grant
    Filed: June 14, 1993
    Date of Patent: February 21, 1995
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Naoto Ohshima, Kentaro Okazaki, Shigeaki Ohtani
  • Patent number: 5290668
    Abstract: A silver halide color photographic material is disclosed comprising a support comprising a base material and a water resistant resin layer containing titanium dioxide particles in an amount of at least 14% by weight of the water resistant resin layer, said support having thereon at least one blue-sensitive silver halide emulsion layer, at least one green-sensitive silver halide emulsion layer, at least one red-sensitive silver halide emulsion layer on the same side of the support as the water resistant resin layer, said photographic material having an optical reflection density of at least 0.70 at 680 nm, said photographic material containing at least one compound represented by formula (I) or (II) and at least one compound represented by formula (III), the total layer thickness of the constituent photographic layers provided on the support after immersing in a color developing solution for at least 60 seconds is at least 1.
    Type: Grant
    Filed: March 24, 1993
    Date of Patent: March 1, 1994
    Assignee: Fuji Photo Film Co., Ltd.
    Inventor: Shigeaki Ohtani
  • Patent number: 5252447
    Abstract: A silver halide color photographic material comprising:a reflective support having thereonat least one light-sensitive silver halide emulsion layer,wherein the reflective support comprises a support substrate covered with a water resisting resin layer,wherein the water resisting resin layer, on the side of the silver halide light-sensitive layer, contains titanium oxide grains in an amount of 14 wt % or more,wherein the photographic material has an optical reflection density of 0.70 or above at 680 nm, andwherein the light-sensitive silver halide emulsion layer contains at least one nondiffusible oil-soluble coupler, which forms a dye on coupling with the oxidation product of an aromatic primary amine color developing agent, dispersed therein together with at least one water-insoluble homo- or copolymer.
    Type: Grant
    Filed: March 5, 1993
    Date of Patent: October 12, 1993
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Shigeaki Ohtani, Shigeru Ohno