Patents by Inventor Satoshi Kanetake

Satoshi Kanetake 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: 5698385
    Abstract: The silver halide photosensitive material of the invention comprises a support, at least one photosensitive silver halide emulsion layer provided on the support and a protective layer provided on the photosensitive silver halide emulsion layer. The protective layer contains agglomerate particles each of which is formed from plural primary particles having a particle diameter smaller than the thickness of the protective layer. For example, agglomerate particles having a mean particle diameter of 0.2 to 30 .mu.m composed of primary particles having a mean particle diameter of 0.01 to 10 .mu.m are contained in the protective layer having a thickness of 0.1 to 10 .mu.m. By the use of such agglomerate particles as matting agent particles, pin-holes caused by sinking of the matting agent can be inhibited and the Bekk second can be made not longer than 2,000 seconds. Moreover, this matting agent has good affinity for gelatin and is almost free from powder-dropping.
    Type: Grant
    Filed: June 5, 1995
    Date of Patent: December 16, 1997
    Assignees: Soken Chemical & Engineering Co., Ltd., Fuji Photo Film Co., Ltd.
    Inventors: Noriyuki Ousaka, Yasuhiro Okada, Satoshi Kanetake, Kunio Ishigaki
  • Patent number: 5342733
    Abstract: A silver halide photographic material has provided on a support a non-light-sensitive surface layer which contains an organic polymer represented by formula (I) and having a mean grain size of 1.0 .mu.m or more, the polymer being produced by suspension polymerization: ##STR1## wherein A is a repeating unit obtained by polymerization of at least one monomer having two or more copolymerizable ethylenic unsaturated groups; B is a repeating unit obtained by polymerization of at least one monomer having one copolymerizable ethylenic unsaturated group; and x, y and z each represents a weight percentage, x is a number of from 1 to 40, y is a number of from 30 to 99 and z is a number of from 0 to 65. The material has good vacuum contact adhesiveness in contact exposures, and the transparency of the processed material is good.
    Type: Grant
    Filed: April 23, 1993
    Date of Patent: August 30, 1994
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Satoshi Kanetake, Tomokazu Yasuda, Yuzou Muramatsu, Takashi Naoi
  • Patent number: 5185240
    Abstract: Disclosed is an autopositive silver halide photographic material which comprises at least one silver halide emulsion layer, characterized in that said emulsion layer or at least one other hydrophilic colloid layers contains at least one compound selected from the group consisting of compounds represented by the following general formulas (1), (2) and (3): ##STR1## wherein R.sub.1 represents hydrogen atom or an alkyl group; and R.sub.2, R.sub.3 and R.sub.4 each represents hydrogen atom, a halogen atom, an alkyl group or an alkoxy group; ##STR2## wherein R.sub.5 represents hydrogen atom or an alkyl group; and R.sub.6 and R.sub.7 each represents hydrogen atom, an alkyl group, a halogen atom or an aryl group; ##STR3## wherein R.sub.8 represents a lower alkylene group; X represents a halogen atom, nitro group, hydroxy group, a cyano group, a lower alkyl group, a lower alkoxy group, ##STR4## or --SO.sub.3 M; R.sub.12 represents hydrogen atom, --OM, a lower alkyl group, a lower alkoxy group or ##STR5## R.sub.
    Type: Grant
    Filed: August 10, 1990
    Date of Patent: February 9, 1993
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Junji Miyata, Satoshi Kanetake, Yasufumi Morimoto, Kenji Hanayama
  • Patent number: 5096803
    Abstract: A method for producing a silver halide photographic material which comprises the steps of:(a) coating hydrophilic colloid coating liquid on a polyester support;(b) forming a hydrophilic colloid layer by drying said hydrophilic coating liquid, when A is not more than 300, in an atmosphere having a relative humidity of not more than 50% and such that the ratio A/B is at least 18whereinA is determined by the following formula:A=(M/S).times.100wherein M represents the moisture content by weight of said hydrophilic colloid layer on said support and S represents the solid weight of said hydrophilic colloid layer on said support, andB is the drying time until A is not more than 8 expressed in seconds; and(C) heat treating said coated supported from step (b) at a temperature of at least 30.degree. C. in a atmosphere having an absolute humidity of not more than 1%.The method of the present invention provides silver halide photographic materials which have improved dimensional stability.
    Type: Grant
    Filed: April 18, 1990
    Date of Patent: March 17, 1992
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Satoshi Kanetake, Shinichi Hashimoto
  • Patent number: 4977071
    Abstract: A silver halide photographic material composed of a polyester film support having thereon at least one hhydrophilic colloid layer containing a polymer latex; and between the support and the hydrophilic colloid layer a layer containing a vinylidene chloride copolymer core-shell latex; at least one hydrophilic colloid layer of the material being a light-sensitive silver halide emulsion layer. The photographic material has superior dimensional stability after processing.
    Type: Grant
    Filed: May 24, 1989
    Date of Patent: December 11, 1990
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Satoshi Kanetake, Shinichi Hashimoto, Shigetoshi Ono, Takashi Naoi
  • Patent number: 4822727
    Abstract: A silver halide photographic light-sensitive material having on a support at least one light-sensitive silver halide emulsion layers and at least one light-insensitive upper layers on the emulsion layer, in which at least one of said light-insensitive upper layers contains a polymer latex having a glass transition point of at least 20.degree. C. and the said at least one light-insensitive upper layer and/or at least one other of said at least one light-insensitive upper layer(s) contains a polymer latex having a glass transition point of lower than 20.degree. C. In the silver halide photographic light-sensitive material, at least one of the light-insensitive upper layers can also have a melting time which is longer than that of the light-sensitive silver halide emulsion layer. The silver halide photographic light-sensitive material has high sticking resistance and improved layer strength under low humidity conditions.
    Type: Grant
    Filed: May 25, 1988
    Date of Patent: April 18, 1989
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Kunio Ishigaki, Yuji Yoshimura, Satoshi Kanetake, Masaaki Torigoe