Patents by Inventor Robert P. Thompson

Robert P. Thompson 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: 5012155
    Abstract: The method of surface-treating dry-powdered phosphor particles for use in manufacturing a viewing screen for a CRT to control the triboelectric charge characteristics of the phosphor particles includes the steps of dissolving a suitable quantity of a polymeric coupling agent in a suitable solvent to form a mixture, surface-treating the phosphor particles by adding them to the mixture to provide a coating of the coupling agent thereon, and then drying the surface-treated phosphor particles. The resultant dry-powdered surface-treated phosphor particles are used to make a luminescent viewing screen for a CRT. The coupling agent controls the triboelectric charge characteristics of the phosphor particles during the electrophotographic manufacturing of the screen.
    Type: Grant
    Filed: December 22, 1989
    Date of Patent: April 30, 1991
    Assignee: RCA Licensing Corp.
    Inventors: Pabitra Datta, Ronald N. Friel, Robert P. Thompson
  • Patent number: 4556820
    Abstract: Image display including a viewing screen comprising spaced elemental image areas and a light-absorbing matrix of crystalline zinc-iron sulfide particles adjacent to these areas. The display may be made by producing a layer which is tacky in substantially the pattern of the desired matrix, and then contacting crystalline zinc-iron sulfide particles with the tacky pattern, whereby particles adhere to the tacky pattern, thereby producing the desired matrix.
    Type: Grant
    Filed: December 27, 1983
    Date of Patent: December 3, 1985
    Assignee: RCA Corporation
    Inventor: Robert P. Thompson
  • Patent number: 4556620
    Abstract: Image display including a viewing screen comprising spaced elemental image areas and a light-absorbing matrix of crystalline zinc-iron sulfide particles adjacent to these areas. The display may be made by producing a layer which is tacky in substantially the pattern of the desired matrix, and then contacting crystalline zinc-iron sulfide particles with the tacky pattern, whereby particles adhere to the tacky pattern, thereby producing the desired matrix.
    Type: Grant
    Filed: January 16, 1985
    Date of Patent: December 3, 1985
    Assignee: RCA Corporation
    Inventor: Robert P. Thompson
  • Patent number: 4370287
    Abstract: To synthesize a particulate phosphor, an intimate dry mixture of phosphor-producing compounds is pressed, as by uniaxial or isostatic pressing, to a self-supporting preform of the desired shape and to a prescribed density. Then, the preform is heated to a reaction temperature and cooled to produce a friable cake of phosphor particles. The cake is broken apart, and the phosphor particles are washed and dried.
    Type: Grant
    Filed: March 20, 1981
    Date of Patent: January 25, 1983
    Assignee: RCA Corporation
    Inventor: Robert P. Thompson