Patents by Inventor Yukio Aogaki

Yukio Aogaki 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: 6309812
    Abstract: There is disclosed an emulsified dispersion of photographic hydrophobic compound fine grains (with a proviso of excluding silver halides), which comprises an added water-soluble monovalent- or polyvalent-metal salt. The emulsified dispersion whose particle size is small, is excellent in the stability of the particle size with the lapse of time. There is also disclosed a silver halide photographic light-sensitive material, which contains the emulsified dispersion.
    Type: Grant
    Filed: November 3, 1998
    Date of Patent: October 30, 2001
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Yukio Aogaki, Masahiro Fukuoka
  • Patent number: 4912023
    Abstract: The present invention provides a photographic light-sensitive material having at least one silver halide light-sensitive layer and at least one light-insensitive layer on a support, characterized in that the light-sensitive layer and/or the light-insensitive layer contain(s) a water-soluble or water-dispersible block copolymer comprising one component of a polyvinyl alcohol polymer and the other component of an ionic group-containing polymer. The support is preferably a reflective support, and the light-sensitive layer and/or the light-insensitive layer may contain a fluorescent whitening agent. The present photographic material is processed preferably in the presence of a fluorescent whitening agent. The present material forms a print with excellent background whiteness and excellent surface gloss. The appearance is not deteriorated after preservation under high moisture conditions for a long period of time.
    Type: Grant
    Filed: May 2, 1988
    Date of Patent: March 27, 1990
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Junichi Matsuyama, Keiichi Adachi, Yukio Aogaki