Patents by Inventor Kenji Kadokura

Kenji Kadokura 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: 5236819
    Abstract: A photographic material having a support and a light sensitive silver halide emulsion layer which contains a magenta coupler represented by Formula M-I, a compound represented by Formula A and a compound represented by Formula B: ##STR1## wherein the substituents are as defined in the specification.
    Type: Grant
    Filed: May 14, 1991
    Date of Patent: August 17, 1993
    Assignee: Konica Corporation
    Inventors: Kenji Kadokura, Katsumasa Yamazaki, Shigeto Hirabayashi
  • Patent number: 4839264
    Abstract: A silver halide photographic material containing at least one of couplers represented by the general formula [I] and at least one of the compounds represented by the general formula [XII] is disclosed. ##STR1## wherein Z is a group of nonmetal atoms necessary to complete a nitrogen-containing heterocyclic ring where the ring formed by Z may be substituted; X is a hydrogen atom or a substituent capable of being released upon reaction with the oxidation product of a color developing agent and R is a hydrogen atom or substituent; ##STR2## wherein R.sub.21 is a hydrogen atom or a group selected from the group consisting of an alkyl group, an alkenyl group, a cycloalkyl group and aryl group, R.sub.22 and R.sub.23 are independently selected from the group consisting of an alkyl group, an alkenyl group, a cycloalkyl group and an aryl group.The photographic material provides a dye-image highly stable against heat and light, and a formation of stain at a non-image area is prevented.
    Type: Grant
    Filed: November 18, 1987
    Date of Patent: June 13, 1989
    Assignee: Konishiroku Photo Industry Co., Ltd.
    Inventors: Shuji Kida, Yutaka Kaneko, Kenji Kadokura, Shinji Yoshimoto, Kosaku Masuda
  • Patent number: 4784287
    Abstract: A bulkhead for use in container liner bags comprises a liner bag mounted to the inside of a container and containing goods charged therein, a plurality of support members disposed while being vertically spaced apart from each other to the end of the container on the side of the door, the both ends of which are detachably fitted to engage into the recessed grooves on both of the side walls of the container for supporting the end face of the liner bag on the side of the door, a positioning apparatus for fixing the vertical position of the uppermost support member and a spacer apparatus for suspending the support members other than the uppermost support member from the just-mentioned uppermost support member for fixing the vertical position between them. The assembly of the support members can serve as an effective bulkhead because of easy attaching and detaching while possessing sufficient withstanding force.
    Type: Grant
    Filed: June 27, 1986
    Date of Patent: November 15, 1988
    Assignees: Nippon Yusen Kaisha, Nihon Matai Co., Ltd.
    Inventors: Hideo Yamada, Shigemi Ichiki, Hisamoto Naniwa, Susumu Uchida, Kenji Kadokura, Susumu Tsunoda, Kunio Nakajima
  • Patent number: 4675280
    Abstract: A silver halide color photographic material that has at least one silver halide emulsion layer on a support is disclosed. Said silver halide emulsion layer contains at least one magenta coupler having the following formula: ##STR1## wherein R.sub.1 is a tertiary alkyl group; R.sub.2 is a primary alkyl group; and X is a halogen atom.
    Type: Grant
    Filed: October 8, 1985
    Date of Patent: June 23, 1987
    Assignee: Konishiroku Photo Industry Co., Ltd.
    Inventors: Yutaka Kaneko, Kenji Kadokura, Toshihiko Kimura, Noritaka Nakayama, Satoshi Kawakatsu, Katsunori Katoh, Kaoru Shinozaki
  • Patent number: 4674127
    Abstract: The liner bag for use in containers comprises a bag main body having bottom, side, front and upper faces corresponding to the configuration on the inner walls of a container, in which the joining edge between the upper face and the side face is bent convexly toward the opposed joining edge, engaging members for detachably engaging the bag main body near the upper and lower four corners on the front thereof to the container, a pair of engaging metal members attached respectively to the two upper corners on the container door side and a pair of side belts which are attached along the joining edges between the upper face and both of the side faces, the ends of which are led out from the ends of the upper face on the door side and in which the led out portions are clamped with each other after being engaged to the engaging metal members. The liner bag can easily be installed to and removed from the container and the sagging in the upper face of the liner bag can be prevented without reducing the volume thereof.
    Type: Grant
    Filed: June 27, 1986
    Date of Patent: June 16, 1987
    Assignees: Nippon Yusen Kaisha, Nihon Matai Co., Ltd.
    Inventors: Hideo Yamada, Shigemi Ichiki, Hisamoto Naniwa, Susumu Uchida, Kenji Kadokura, Susumu Tsunoda, Kunio Nakajima
  • Patent number: 4639415
    Abstract: A silver halide color photographic material is disclosed which contains a magenta color image-forming coupler represented by the following formula (I) and a compound represented by the following formula (II): ##STR1## wherein Z represents the group of nonmetallic atoms necessary for forming a nitrogen-containing heterocyclic ring, provided that the ring to be formed by said Z may have a substitutent;X represents a hydrogen atom or a substituent capable of leaving upon reaction with the oxidized product of a color developing agent; andR represents a hydrogen atom or a substituent. ##STR2## wherein R.sub.1 is an aliphatic group, a cycloalkyl group or an aryl group; andY represents the group of nonmetallic atoms necessary for forming a 5- to 7-membered heterocyclic ring taken together with the nitrogen atom, provided that at least two hetero atoms among the heterocyclic ring-forming nonmetallic atoms including the nitrogen atom are not adjacent to each other.
    Type: Grant
    Filed: September 16, 1985
    Date of Patent: January 27, 1987
    Assignee: Konishiroku Photo Industry Co., Ltd.
    Inventors: Yutaka Kaneko, Toshihiko Kimura, Kenji Kadokura
  • Patent number: 4623617
    Abstract: A silver halide color photographic material is disclosed, said material containing a magenta color image-forming coupler represented by the following formula (I) and a compound represented by the following formuls (XI): ##STR1## wherein Z represents the group of nonmetallic atoms necessary for forming a nitrogen-containing heterocyclic ring, provided that the ring to be formed by said Z may have a substituent;X represents a hydrogen atom or a substituent capable of leaving upon reaction with the oxidized product of a color developing agent; andR represents a hydrogen atom or a substituent. ##STR2## wherein R.sup.1 and R.sup.4 each represents a hydrogen atom, a halogen atom, an alkyl group, an alkenyl group, an alkoxy group, an alkenyloxy group, a hydroxy group, an aryl group, an aryloxy group, an acyl group, an acylamino group, an acyloxy group, a sulfonamido group, a cycloalkyl group or an alkoxycarbonyl group;R.sup.
    Type: Grant
    Filed: October 8, 1985
    Date of Patent: November 18, 1986
    Assignee: Konishiroku Photo Industry Co., Ltd.
    Inventors: Yutaka Kaneko, Kenji Kadokura, Toshihiko Kinura