Patents by Inventor Catherine C. Wideman

Catherine C. Wideman 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).

  • High-speed high quality direct radiographic film
    Patent number: 6232058
    Abstract: A high quality direct radiographic film is useful for dental care. The film contains relatively high silver coverage preferably coated on both sides of the support. It also contains sufficient silver halide desensitizer to reduce silver halide sensitivity to X-radiation by at least 0.02 log E. The combination of silver and desensitizer coverages provides sufficiently high photographic speed, excellent image quality and increased stability to background radiation sources.
    Type: Grant
    Filed: January 11, 2000
    Date of Patent: May 15, 2001
    Assignee: Eastman Kodak Company
    Inventors: Anthony Adin, Richard E. Beal, Franklin C. Brayer, Catherine C. Wideman
  • Film for duplicating silver images in radiographic films
    Patent number: 5491058
    Abstract: A film is disclosed for duplicating a silver image in a radiographic film. A single monodispersed fogged direct-positive emulsion layer is employed. To extend exposure latitude the emulsion layer contains micro-crystalline particles of a dye that competes with the fogged direct positive grains of the emulsion layer for absorption of exposing radiation and can be decolorized during photographic processing.
    Type: Grant
    Filed: June 28, 1995
    Date of Patent: February 13, 1996
    Assignee: Eastman Kodak Company
    Inventors: Ralph W. Jones, Catherine C. Wideman, Paul W. Twombly