Patents by Inventor Chiyoji Hitomi

Chiyoji Hitomi 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).

  • Thermal melt transfer color ink sheet
    Patent number: 5441794
    Abstract: An ink sheet for making thermal transfer colour recordings, with practically acceptable high speed and high resolution using a semiconductor laser beam, comprises a support film coated with an opto-thermal conversion layer to generate heat by absorbing the laser beam, and an overlying thermal melt transfer ink layer, wherein the opto-thermal conversion layer is 5 .mu.m thick or less, and in the wavelength region of 700 nm to 900 nm has a laser beam transmittance of 5% or less.
    Type: Grant
    Filed: August 28, 1992
    Date of Patent: August 15, 1995
    Assignee: Imperial Chemical Industries, PLC
    Inventors: Chiyoji Hitomi, Akinari Kaneko, Jun Hoshikawa
  • Liquid crystal devices
    Patent number: 5088807
    Abstract: A liquid crystal device comprises a layer of fibers or filaments (15) permeated with liquid crystal material, the layer (15) being located between electrodes (13, 14) by means of which an electric field can be applied across the layer to vary the transmissivity of the liquid crystal/fiber composite. The diameters of the fibers/filaments are selected so that the light transmissivity of the composite has reduced sensitivity with respect to mismatch of the refractive indices of the liquid crystal and the fibers/filaments.
    Type: Grant
    Filed: May 23, 1989
    Date of Patent: February 18, 1992
    Assignee: Imperial Chemical Industries PLC
    Inventors: Colin M. Waters, Timothy J. Noakes, Ian Pavey, Chiyoji Hitomi
  • Transparent conductive film
    Patent number: 4419399
    Abstract: A transparent conductive film comprising a synthetic resin film or sheet, particularly a phenoxyether type polymeric supporting film or sheet, having on one surface thereof a transparent conductive layer laminated by means of vacuume metal evaporation or the like, said film or sheet meeting certain requirements with respect to retardation value, heat distortion temperature, average visible light transmittance, water vapor permeability, Izod impact strength and degree of swelling in solvents.
    Type: Grant
    Filed: July 6, 1981
    Date of Patent: December 6, 1983
    Assignee: Toyo Boseki Kabushiki Kaisha
    Inventors: Rinjiro Ichikawa, Chiyoji Hitomi
  • Laminated light-polarizing sheet
    Patent number: 4387133
    Abstract: A laminated light-polarizing sheet comprising a film or sheet of a polymer, especially a phenoxyether polymer, laminated at least on one surface of a light-polarizing film and a transparent conductive layer formed by vacuum metal evaporation etc. on a surface of a film or sheet to the light-polarizing film, wherein the film or sheet has specified ranges of retardation value, heat distortion temperature, average visible light transmittance, water vapor permeability, Izod impact strength and degree of swelling in solvents.
    Type: Grant
    Filed: July 6, 1981
    Date of Patent: June 7, 1983
    Assignee: Toyo Boseki Kabushiki Kaisha
    Inventors: Rinjiro Ichikawa, Chiyoji Hitomi