Patents by Inventor Hiroshi Kashiwagi

Hiroshi Kashiwagi 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: 7005251
    Abstract: A silver salt photothermographic dry imaging material including non-photosensitive aliphatic carboxylic acid silver salts; a photosensitive emulsion containing photosensitive silver halide grains; a silver ion reducing agent; a binder; and a cyan coloring leuco dye. A percentage of the photosensitive silver halide grains having a mean particle size of 0.01 or more ?m and 0.04 ?m or less is 5% or more by mass and 50% or less by mass of total photosensitive silver halide grains by conversion into a silver amount.
    Type: Grant
    Filed: November 20, 2003
    Date of Patent: February 28, 2006
    Assignee: Konica Minolta Holdings, Inc.
    Inventors: Hiroshi Kashiwagi, Narito Goto
  • Publication number: 20050112514
    Abstract: A silver salt photothermographic material is disclosed, comprising on a support a light-insensitive silver salt of an aliphatic carboxylic agent, light-sensitive silver halide grains, a reducing agent for silver ions and a binding agent, wherein the silver halide grains are those which are capable being converted from a surface latent image formation type to internal latent image formation type upon thermal development, and the photothermographic material further comprises a dye microcapsule dispersion or a dye compound containing at least two chromophores.
    Type: Application
    Filed: October 22, 2004
    Publication date: May 26, 2005
    Inventor: Hiroshi Kashiwagi
  • Publication number: 20040115569
    Abstract: A photothermographic imaging material including a support; an image forming layer containing an organic silver salt, a photosensitive silver halide, a binder and a silver ion reducing agent, the image forming layer being provided on the support; and a cyan coloring leuco dye. The photosensitive silver halide contains silver halide grains having a mean particle size of 10 to 50 nm, and the silver ion reducing agent is a compound represented by the following Formula (A-3).
    Type: Application
    Filed: December 2, 2003
    Publication date: June 17, 2004
    Applicant: Konica Minolta Holdings, Inc.
    Inventors: Hiroshi Kashiwagi, Narito Goto
  • Publication number: 20040106074
    Abstract: A silver salt photothermographic dry imaging material including non-photosensitive aliphatic carboxylic acid silver salts; a photosensitive emulsion containing photosensitive silver halide grains; a silver ion reducing agent; a binder; and a cyan coloring leuco dye. A percentage of the photosensitive silver halide grains having a mean particle size of 0.01 or more &mgr;m and 0.04 &mgr;m or less is 5% or more by mass and 50% or less by mass of total photosensitive silver halide grains by conversion into a silver amount.
    Type: Application
    Filed: November 20, 2003
    Publication date: June 3, 2004
    Applicant: Konica Minolta Holdings, Inc.
    Inventors: Hiroshi Kashiwagi, Narito Goto
  • Publication number: 20040053177
    Abstract: A photothermographic material is disclosed, comprising a light-insensitive silver salt of an aliphatic carboxylic acid and light-sensitive silver halide grains, a reducing agent for silver ions and a binder, wherein the photothermographic material further comprises a compound represented by the following formula, and the photothermographic material meets the following requirement:
    Type: Application
    Filed: September 8, 2003
    Publication date: March 18, 2004
    Applicant: Konica Corporation
    Inventors: Hiroshi Kashiwagi, Hideki Takiguchi, Soc Man Ho Kimura
  • Patent number: 6677113
    Abstract: Spectral sensitizing dyes represented by the following formulas (1) to (4) are disclosed; silver halide photographic materials and thermally developable photosensitive materials containing the dyes are also disclosed.
    Type: Grant
    Filed: April 10, 2002
    Date of Patent: January 13, 2004
    Assignee: Konica Corporation
    Inventors: Nobuaki Kagawa, Noriyasu Kita, Tatsuo Tanaka, Hiroshi Kashiwagi
  • Publication number: 20030143499
    Abstract: Spectral sensitizing dyes represented by the following formulas (1) to (4) are disclosed; silver halide photographic materials and thermally developable photosensitive materials containing the dyes are also disclosed.
    Type: Application
    Filed: April 10, 2002
    Publication date: July 31, 2003
    Inventors: Nobuaki Kagawa, Noriyasu Kita, Tatsuo Tanaka, Hiroshi Kashiwagi
  • Patent number: 6475710
    Abstract: A photothermographic material is disclosed, comprising a light-sensitive silver halide, an organic silver salt, a reducing agent, a thiuronium salt and a binder, wherein the photothermographic material further contains at least one of compounds represented by formulas such as
    Type: Grant
    Filed: January 17, 2001
    Date of Patent: November 5, 2002
    Assignee: Konica Corporation
    Inventors: Shinji Kudo, Keiko Chigusa, Hiroshi Kashiwagi
  • Patent number: 6440344
    Abstract: In a method of producing a composite insulator having a core member, end fitting members fixed to both end portions of the core member, and an overcoat member including a sheath portion formed on an outer surface of the core member and shed members, the overcoat member and the end fitting member are connected by curing. Moreover, a clamping operation is performed or a packing member is used for preventing a flow of an overcoat forming material into a seal portion. In this manner, it is possible to improve a seal performance of a connection boundary between the end fitting member and the overcoat member.
    Type: Grant
    Filed: February 5, 1999
    Date of Patent: August 27, 2002
    Assignee: NGK Insulators, Ltd.
    Inventors: Daisaku Goto, Hiroshi Kashiwagi, Takao Tani
  • Publication number: 20020106593
    Abstract: Spectral sensitizing dyes represented by the following formulas (1) to (4) are disclosed; silver halide photographic materials and thermally developable photosensitive materials containing the dyes are also disclosed.
    Type: Application
    Filed: February 28, 2000
    Publication date: August 8, 2002
    Inventors: Nobuaki Kagawa, Noriyasu Kita, Tatsuo Tanaka, Hiroshi Kashiwagi
  • Patent number: 6425173
    Abstract: A forming die including of a holder having an upper portion and a lower portion, each portion having a main substrate extending in a first longitudinal direction. A fixing substrate is located on one end of the main substrate and a movable substrate is located on an opposite end of the main substrate and is movable along the main substrate in the first longitudinal direction. A plurality of die forming segments are situated between the movable substrate and the fixing substrate. Tie rods extend along the main substrate outside the periphery of the plurality of die forming segments, and connect the movable substrate and the fixing substrate to one another.
    Type: Grant
    Filed: August 29, 2000
    Date of Patent: July 30, 2002
    Assignee: NGK Insulators, Ltd.
    Inventors: Akio Enomoto, Shinji Tada, Hiroshi Kashiwagi
  • Publication number: 20020000326
    Abstract: In a method of producing a composite insulator having a core member, end fitting members fixed to both end portions of the core member, and an overcoat member including a sheath portion formed on an outer surface of the core member and shed members, the overcoat member and the end fitting member are connected by curing. Moreover, a clamping operation is performed or a packing member is used for preventing a flow of an overcoat forming material into a seal portion. In this manner, it is possible to improve a seal performance of a connection boundary between the end fitting member and the overcoat member.
    Type: Application
    Filed: February 5, 1999
    Publication date: January 3, 2002
    Inventors: DAISAKU GOTO, HIROSHI KASHIWAGI, TAKAO TANI
  • Patent number: 6329135
    Abstract: A silver halide photothermographic material is disclosed, comprising a support having thereon a light-sensitive layer and light-insensitive layer, wherein the light-sensitive layer or the light-insensitive layer comprises a heteroatom-containing macrocyclic compound, and the light-sensitive layer comprising a sensitizing dye exhibiting maximum sensitivity at a wavelength of 600 nm or more.
    Type: Grant
    Filed: June 2, 2000
    Date of Patent: December 11, 2001
    Assignee: Konica Corporation
    Inventor: Hiroshi Kashiwagi
  • Publication number: 20010031430
    Abstract: A photothermographic material is disclose, comprising a light-sensitive silver halide, an organic silver salt, a reducing agent, a thiuronium salt and a binder, wherein the photothermographic material further contains at least one of compounds represented by formulas such as 1
    Type: Application
    Filed: January 17, 2001
    Publication date: October 18, 2001
    Inventors: Shinji Kudo, Keiko Chigusa, Hiroshi Kashiwagi
  • Patent number: 6265146
    Abstract: A thermally developable photosensitive material of enhanced sensitivity, reduced variation in sensitivity following pre-exposure storage and improved silver image tone is disclosed, comprising a support having thereon an organic silver salt, a binder, a photosensitive silver halide, an infrared-sensitizing dye and a heteroatom containing macrocyclic compound.
    Type: Grant
    Filed: February 25, 2000
    Date of Patent: July 24, 2001
    Assignee: Konica Corporation
    Inventor: Hiroshi Kashiwagi
  • Patent number: 6248270
    Abstract: A disclosed method of repairing a shed portion of a composite insulator having a core portion, a sheath portion arranged on an outer surface of the core portion, and a plurality of shed portions projected from the sheath portion, includes the steps of, (1) cutting out the shed portion having defects from the sheath portion while leaving the sheath portion, and connecting a new shed portion having the same shape as that of the cut out shed portion to the sheath portion at the cut out portion, or (2) cutting out partly the shed portion having defects, and connecting a repairing member to the cut out portion. Therefore, it is possible to perform the shed portion repairing operation without wasting the normal shed portions.
    Type: Grant
    Filed: July 7, 1998
    Date of Patent: June 19, 2001
    Assignee: NGK Insulators, Ltd.
    Inventors: Takao Tani, Hiroshi Kashiwagi
  • Patent number: 6135752
    Abstract: A forming die including of a holder having an upper portion and a lower portion, each portion having a main substrate extending in a first longitudinal direction. A fixing substrate is located on one end of the main substrate and a movable substrate is located on an opposite end of the main substrate and is movable along the main substrate in the first longitudinal direction. A plurality of die forming segments are situated between the movable substrate and the fixing substrate. Tie rods extend along the main substrate outside the periphery of the plurality of die forming segments, and connect the movable substrate and the fixing substrate to one another.
    Type: Grant
    Filed: November 2, 1998
    Date of Patent: October 24, 2000
    Assignee: NGK Insulators, Ltd.
    Inventors: Akio Enomoto, Shinji Tada, Hiroshi Kashiwagi
  • Patent number: 6042771
    Abstract: Method and apparatus for manufacturing a composite insulator including an FRP core rod which is integrally provided with a sheath and a plurality of sheds formed of an electrically insulating polymeric material. The core rod has a longitudinal end portion provided with a seat for a metal fitting, which is integral with the sheath. To manufacture such a composite insulator, the core rod is placed in a mold cavity of a mold assembly, with a seat forming member detachably fitted to the end portion of the core rod and arranged between a pair of mold halves. An inner space is formed between the seat forming member and a core rod, which is in communication with the mold cavity. An electrically insulating polymeric material is introduced into the mold cavity to form the sheath and sheds, while admitting the polymeric material into the space between the seat forming member and the core rod so as to form a seat for the metal fitting, which is essentially free from burrs.
    Type: Grant
    Filed: January 9, 1998
    Date of Patent: March 28, 2000
    Assignee: NGK Insulators, Ltd.
    Inventor: Hiroshi Kashiwagi
  • Patent number: 6033201
    Abstract: A method of producing a composite insulator having a sheath and shed portions molded around a core rod, grasping metal fittings engagingly fitted and fixed at both end portions of the core rod, the sheath covering the core rod between the grasping metal fittings on the whole circumference of the core rod, and a plurality of shed portions extruding radially outwardly from the sheath at plural positions spaced from each other in the longitudinal direction of the core rod, by filling an insulative high molecular material and subsequent vulcanization thereof in the cavity of molding die portions. The methods includes positioning and retaining the core rod at a desired position in the cavity of the molding die portions by means of retaining rings engagingly fitted on the grasping metal fittings and allowing an excess portion of the insulative high molecular material filled in the cavity to flow out to the exterior of the cavity between the grasping metal fittings and the retaining rings.
    Type: Grant
    Filed: May 21, 1998
    Date of Patent: March 7, 2000
    Assignee: NGK Insulators, Ltd.
    Inventor: Hiroshi Kashiwagi
  • Patent number: 6019931
    Abstract: A method of molding a composite insulator having a core member and an overcoat portion arranged on an outer surface of the core member, in which a core member having metal fittings at both ends thereof is set in a metal mold for molding the composite insulator, overcoat portion forming materials are filled in a cavity for molding said overcoat portion formed around the core member, and then the overcoat portion forming materials are cured by heat, is disclosed. The improved method includes a step of making a temperature increase of the overcoat portion forming materials near the metal fittings equal to that of the other portion, when the overcoat portion forming materials are cured by heat, by utilizing an additional heating means.
    Type: Grant
    Filed: December 22, 1997
    Date of Patent: February 1, 2000
    Assignee: NGK Insulators, Ltd.
    Inventor: Hiroshi Kashiwagi