Patents by Inventor Katsuhiro Yoshida

Katsuhiro Yoshida 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: 6087008
    Abstract: A thermal transfer material favorably used for forming images or patterns by means of thermal transfer, especially a spacer for liquid crystal display panels and a dot spacer for switching devices such as touch panel is disclosed which comprises a foundation and a heat-sensitive transferable layer provided on the foundation, the heat-sensitive transferable layer comprising an acrylic copolymer containing at least recurring units derived from glycidyl (meth)acrylate and/or an epoxy resin containing two or more epoxy groups in one molecule, and a curing agent containing carboxyl group.
    Type: Grant
    Filed: March 9, 1998
    Date of Patent: July 11, 2000
    Assignee: Fujicopian Co., Ltd.
    Inventor: Katsuhiro Yoshida
  • Patent number: 6024914
    Abstract: Conventional anodes for solid electrolytic capacitor have small numbers of spaces and gaps therein and, when made into a capacitor, have shown insufficient (high) tan d and ESR. An anode having enlarged numbers of spaces and gaps and giving a capacitor of improved tan d and ESR can be produced by using, as a material for shaped material (anode before sintering), a mixed powder of a granulated valve metal powder of 50 to 200 .mu.m in particle diameter and a solid organic substance of 20 .mu.m or less in average particle diameter.
    Type: Grant
    Filed: August 31, 1998
    Date of Patent: February 15, 2000
    Assignee: NEC Corporation
    Inventor: Katsuhiro Yoshida
  • Patent number: 5935709
    Abstract: A thermal transfer recording material comprising a foundation and a heat-meltable ink layer provided on the foundation, the heat-meltable ink layer comprising a heat-meltable vehicle and a coloring agent, the heat-meltable vehicle comprising at least one epoxy resin selected from the group consisting of tetraphenolethane tetraglycidyl ether, cresol novolac polyglycidyl ether, bisphenol A diglycidyl ether and bisphenol F diglycidyl ether, and a low melt viscosity substance, the epoxy resin and the low melt viscosity substance accounting for 50 to 95% by weight and 5 to 50% by weight, respectively, of the overall heat-meltable vehicle. The recording material exhibits satisfactory transferability and gives printed images having excellent scratch resistance.
    Type: Grant
    Filed: November 21, 1996
    Date of Patent: August 10, 1999
    Assignee: Fujicopian Co., Ltd.
    Inventor: Katsuhiro Yoshida
  • Patent number: 5888644
    Abstract: A thermal transfer recording material is provided which comprises a foundation and, provided thereon, a heat-meltable ink layer comprising a coloring agent, a heat-meltable binder material and a particulate wax, the heat-meltable binder material comprising 30 to 90% by weight of an epoxy resin and 10 to 70% by weight of a copolymer resin comprising vinyl chloride and vinyl acetate, the particulate wax having an average particle diameter of 0.05 to 15 .mu.m.
    Type: Grant
    Filed: July 15, 1996
    Date of Patent: March 30, 1999
    Assignee: Fujicopian Co., Ltd.
    Inventors: Katsuhiro Yoshida, Kotaro Akashiro
  • Patent number: 5882797
    Abstract: A thermal transfer recording material comprising a foundation and a heat-meltable ink layer comprising a vehicle and a pigment provided on the foundation, the vehicle comprising not less than 85% by weight of an epoxy resin, the epoxy resin comprising not less than 50% by weight of at least one of tetraphenolethane tetraglycidyl ether and a bromide thereof, cresol novolac polyglycidyl ether and a bromide thereof, and bisphenol F diglycidyl ether and a bromide thereof. The recording material has excellent transferability and gives printed images excellent heat resistance, solvent resistance and scratch resistance.
    Type: Grant
    Filed: July 19, 1996
    Date of Patent: March 16, 1999
    Assignee: Fujicopian Co., Ltd.
    Inventors: Katsuhiro Yoshida, Kotaro Akashiro
  • Patent number: 5773149
    Abstract: A thermal transfer recording material comprising a foundation and a heat-meltable ink layer comprising a vehicle and a pigment provided on the foundation, the vehicle comprising not less than 85% by weight of an epoxy resin, the epoxy resin comprising not less than 50% by weight of at least one of tetraphenolethane tetraglycidyl ether and a bromide thereof, cresol novolac polyglycidyl ether and a bromide thereof, and bisphenol F diglycidyl ether and a bromide thereof. The recording material has excellent transferability and gives printed images excellent heat resistance, solvent resistance and scratch resistance.
    Type: Grant
    Filed: July 19, 1996
    Date of Patent: June 30, 1998
    Assignee: Fujicopian Co., Ltd.
    Inventors: Katsuhiro Yoshida, Kotaro Akashiro
  • Patent number: 5741583
    Abstract: A thermal transfer recording material comprising a foundation and, provided thereon, a heat-meltable ink layer comprising at least an epoxy resin, a coloring agent and a particulate polytetrafluoroethylene, the epoxy resin comprising not less than 50% by weight of at least one member selected from the group consisting of tetraphenolethane tetraglycidyl ether, cresol novolac polyglycidyl ether, bisphenol A diglycidyl ether and bisphenol F diglycidyl ether, the content of the particulate polytetrafluoroethylene in the heat-meltable ink layer being from 1 to 60% by weight. The recording material exhibits satisfactory transferability and gives printed images having excellent scratch resistance.
    Type: Grant
    Filed: October 8, 1996
    Date of Patent: April 21, 1998
    Assignee: Fujicopian Co., Ltd.
    Inventor: Katsuhiro Yoshida
  • Patent number: 5733665
    Abstract: A multi-usable thermal transfer ink sheet including a foundation and a multi-transferable ink layer provided on the foundation, the ink layer containing a heat-meltable material and carbon black as main ingredients, the carbon black having an oil absorption of not more than 70 ml/100 g. The ink sheet enables multi-printing with ensuring a high print density.
    Type: Grant
    Filed: November 12, 1992
    Date of Patent: March 31, 1998
    Assignee: Fujicopian Co., Ltd.
    Inventors: Takao Arimura, Masao Saisho, Jun Sogabe, Katsuhiro Yoshida, Naohiro Ikeda
  • Patent number: 5714249
    Abstract: A thermal transfer recording material is provided comprising a foundation and, provided thereon, a heat-meltable ink layer comprising an epoxy resin, a particulate wax having an average particle diameter of 0.05 to 15 .mu.m and a pigment, the epoxy resin comprising not less than 50% by weight of at least one resin selected from the group consisting of tetraphenolethane tetraglycidyl ether, cresol novolac polyglycidyl ether, bisphenol A diglycidyl ether and bisphenol F diglycidyl ether.
    Type: Grant
    Filed: June 13, 1996
    Date of Patent: February 3, 1998
    Assignee: Fujicopian Co., Ltd.
    Inventors: Katsuhiro Yoshida, Kotaro Akashiro
  • Patent number: 5658667
    Abstract: A thermal transfer recording material comprising a foundation and a heat-meltable ink layer comprising a vehicle and a pigment provided on the foundation, the vehicle comprising not less than 85% by weight of an epoxy resin, the epoxy resin comprising not less than 50% by weight of at least one of tetraphenolethane tetraglycidyl ether and a bromide thereof, cresol novolac polyglycidyl ether and a bromide thereof, and bisphenol F diglycidyl ether and a bromide thereof. The recording material has excellent transferability and gives printed images excellent heat resistance, solvent resistance and scratch resistance.
    Type: Grant
    Filed: July 21, 1995
    Date of Patent: August 19, 1997
    Assignee: Fujicopian Co., Ltd.
    Inventors: Katsuhiro Yoshida, Kotaro Akashiro
  • Patent number: 5420613
    Abstract: A multi-usable thermal transfer ink sheet wherein on a foundation is provided a thermal transfer ink layer which is tranferable in portions in terms of the thickness thereof. To realize multi-printing even in an indirect thermal transfer method, the multi-usable thermal transfer ink sheet is characterized in that the thermal transfer ink layer contains as main ingredients thereof a wax compound having a polar group, and a pigment.
    Type: Grant
    Filed: December 2, 1993
    Date of Patent: May 30, 1995
    Assignee: Fujicopian Co. Ltd.
    Inventors: Masao Saisho, Jun Sogabe, Katsuhiro Yoshida, Naohiro Ikeda
  • Patent number: 5326620
    Abstract: A multi-usable thermal transfer ink sheet comprising a foundation, a heat-meltable, multi-transferable ink layer provided on the foundation, and a heat-meltable overcoat provided on the ink layer, said overcoat having a greater cohesive force than that of said ink layer. A rough paper-adaptability and a resistance to receiving paper-staining are improved with ensuring a desired multi-printing property.
    Type: Grant
    Filed: August 5, 1992
    Date of Patent: July 5, 1994
    Assignee: Fujicopian Co., Ltd.
    Inventors: Takao Arimura, Masao Saisho, Jun Sogabe, Katsuhiro Yoshida, Noahiro Ikeda
  • Patent number: 5051302
    Abstract: A multi-usable heat transfer ink ribbon comprising a foundation, and a heat transfer ink layer provided on one surface of the foundation, said heat transfer ink layer having a melt index of 4.times.10.sup.2 to 2.5.times.10.sup.3 g/10 min. at 190.degree. C. and containing a vehicle and 3.times.10 to 6.times.10% by volume of a nonthermoplastic powder dispersed in a nonagglomerative state, wherein said heat transfer ink layer is capable of being melted or softened to be transferred to a receiving medium in increments relative to the thickness direction of the ink layer upon heating by means of a heating head. The multi-usable heat transfer ink ribbon, though the whole of the ink layer is transferable by incorporating into the ink layer no nontransferable material which hinders the transfer of the ink, can give printed images having the same clearness as that of the printed image obtained by the initial printing even after the ribbon is repeatedly used multiple times for printing.
    Type: Grant
    Filed: July 26, 1990
    Date of Patent: September 24, 1991
    Assignee: Fuji Kagakushi Kogyo Co., Ltd.
    Inventors: Hiromi Tsuyguchi, Masao Saisho, Katsuhiro Yoshida
  • Patent number: 4590387
    Abstract: This transfer switch has movable contactors moving to connect a load side fixed contactor alternatively to two different current source side fixed contactors. The movable contactors are operatively connected with a control shaft moving along either inclined path of a substantially V-shaped guide groove and the current source selected by the movable contactor is determined by which inclined path of the guide groove the control shaft follows. The inclined path along which the control shaft moves is determined by the direction of the inclination of a point plate closing the inclined path by inclining to either side. The control shaft rises along either of the inclined paths of the guide groove as operatively connected with a rotating motion against a returning spring by a manual or electric operation of an operating lever. When the operating lever is in the original position, the control shaft will be positioned in the middle of the guide groove and the movable contactors will be in neutral positions.
    Type: Grant
    Filed: December 11, 1984
    Date of Patent: May 20, 1986
    Assignee: Aichi Electric Works Co., Ltd.
    Inventors: Katsuhiro Yoshida, Hiroshi Horiguchi
  • Patent number: D439273
    Type: Grant
    Filed: January 4, 2000
    Date of Patent: March 20, 2001
    Assignee: Toshiba Tec Kabushiki Kaisha
    Inventors: Shigeru Sato, Katsuhiro Yoshida
  • Patent number: D439901
    Type: Grant
    Filed: November 30, 1999
    Date of Patent: April 3, 2001
    Assignee: Toshiba Tec Kabushiki Kaisha
    Inventors: Yashiro Ono, Katsuhiro Yoshida