Patents by Inventor Carl E. Landmesser

Carl E. Landmesser 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).

  • Coated phosphors, method for producing same and articles employing same
    Patent number: 4473634
    Abstract: The red and blue color cathode ray tube phosphors for color television are pigmented with a coating of an aqueous-insoluble silicate-based glass matrix containing pigment particles. When incorporated into a tridot color cathode ray tube, the contrast of the tube is improved. The coated particles are formed by dispersing the particles in a slurry with a silicate, the pigment particles and an optional wetting agent, and evaporating the slurry to dryness. The dried coated particles are then heated in order to insolubilize the glass matrix, and soluble ions are then removed by washing.
    Type: Grant
    Filed: February 12, 1982
    Date of Patent: September 25, 1984
    Assignee: GTE Products Corporation
    Inventors: Robert E. Dodds, Carl E. Landmesser, Henry B. Minnier, Harry O. Schulze