Patents by Inventor Kiyotaka Hori

Kiyotaka Hori 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: 5049915
    Abstract: In photographic silver halide photosensitive material processing apparatus comprising a processing tank for processing the photosensitive material by dipping it in a processing solution and a drying section including pairs of transport and guide rollers for cooperatively transporting the photosensitive material therethrough while drying it, the transport and guide rollers are provided with a coating containing a hydrolytic silicon oxide condensate or a silicone resin.
    Type: Grant
    Filed: April 13, 1990
    Date of Patent: September 17, 1991
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Takashi Nakamura, Kiyotaka Hori, Kaoru Uchiyama
  • Patent number: 4444926
    Abstract: A method of hardening gelatin is described which uses (1) a polymer containing at least 0.01 mol % of a repeating unit represented by formula (I) ##STR1## wherein R represents a hydrogen atom, an alkyl group having from 1 to 6 carbon atoms, or a halogen atom, M represents a hydrogen atom, an alkali metal atom, an alkaline earth metal atom, or an organic base, X represents an alkyl group having from 1 to 6 carbon atoms, an alkoxy group having from 1 to 6 carbon atoms, an alkylamino group having from 1 to 6 carbon atoms, or a halogen atom, m represents 0, 1 or 2, and n represents 1 or 2, (2) a polyvalent alcohol having at least two hydroxy groups, and (3) a hardener having an active vinyl group.The method has advantages in that the rate of hardening the gelatin is fast, the so-called post hardening property is small, and the gelatin composition is hardely influenced by the conditions of temperature and humidity during storage.
    Type: Grant
    Filed: November 10, 1981
    Date of Patent: April 24, 1984
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Masasi Ogawa, Kunio Ishigaki, Kiyotaka Hori
  • Patent number: 4268623
    Abstract: A photographic light-sensitive material having an antistatic layer containing a water-soluble, film-forming polymer having a carboxylic acid group and gelatin, said layer further containing a carboxylic acid activating condensing agent.
    Type: Grant
    Filed: January 11, 1980
    Date of Patent: May 19, 1981
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Hidefumi Sera, Kiyotaka Hori, Naohiko Sugimoto
  • Patent number: 4266010
    Abstract: A silver halide photographic light-sensitive material containing at least one photographic layer containing acid-processed gelatin and a matting agent.
    Type: Grant
    Filed: March 30, 1979
    Date of Patent: May 5, 1981
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Shigeru Nagatomo, Kiyotaka Hori
  • Patent number: 4201586
    Abstract: A photographic light-sensitive material having improved anti-adhesive properties comprising an uppermost layer containing acid-processed gelatin and a surface active organic fluoro-compound.
    Type: Grant
    Filed: November 4, 1977
    Date of Patent: May 6, 1980
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Kiyotaka Hori, Shigeru Nagatomo
  • Patent number: 4142894
    Abstract: A method for forming images which comprises processing a silver halide color photographic light-sensitive element containing in the uppermost layer thereof a matting agent composed of methyl methacrylate-methacrylic acid copolymers having a methyl methacrylate/methacrylic acid molar ratio of 6:4 to 9:1 at a temperature above about 30.degree. C. The matting agent is capable of being dissolved into alkaline processing solutions and does not adversely affect the transparency and graininess of the images formed.
    Type: Grant
    Filed: July 8, 1977
    Date of Patent: March 6, 1979
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Kiyotaka Hori, Takeshi Mikami, Takushi Miyazako, Kenji Naito
  • Patent number: 4021245
    Abstract: A photographic light-sensitive material with an uppermost layer thereon containing a gelatin derivative and silicic anhydride colloid.
    Type: Grant
    Filed: April 30, 1975
    Date of Patent: May 3, 1977
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Shigeru Nagatomo, Kiyotaka Hori
  • Patent number: 4021244
    Abstract: Silver halide photographic sensitive materials which comprise a surface layer containing acid treated gelatin and alkali treated gelatin, wherein the ratio by weight of the alkali treated gelatin to the acid treated gelatin is about 0.5 to less than about 100%.
    Type: Grant
    Filed: April 17, 1975
    Date of Patent: May 3, 1977
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Shigeru Nagatomo, Kiyotaka Hori
  • Patent number: 4004927
    Abstract: A photographic light-sensitive material comprising a support having thereon at least one light-sensitive silver halide emulsion layer and with at least one photographic layer of the photographic light-sensitive material containing a liquid organopolysiloxane having therein at least one siloxane unit, in which (1) a methyl group and (2) an alkyl group, a cycloalkyl group, an alkoxyalkyl group, an aralkyl group, an aryloxyalkyl group or a 2,3-epoxypropyloxyalkyl group with each group having at least 5 carbon atoms are attached to the silicon atom of the siloxane unit.
    Type: Grant
    Filed: February 3, 1975
    Date of Patent: January 25, 1977
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Nobuo Yamamoto, Kiyotaka Hori, Masakazu Yoneyama, Yasuhiro Nakayama, Akira Abe