Patents by Inventor Robert E. Dickerson

Robert E. Dickerson 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).

  • Photographic element exhibiting reduced sensitizing dye stain
    Patent number: 4520098
    Abstract: A spectrally sensitized silver halide photographic element capable of producing a stable, viewable silver image on development and fixing out is disclosed. The latent image forming silver halide grains in the image recording emulsion layer or layers of the photographic element are silver bromide, chloride, or chlorobromide grains. At least one of the image recording emulsion layers contains spectrally sensitized tabular grains. Located in proximity to the spectrally sensitized tabular grains are relatively fine high iodide silver halide grains capable of being dissolved during fixing out.
    Type: Grant
    Filed: May 31, 1984
    Date of Patent: May 28, 1985
    Assignee: Eastman Kodak Company
    Inventor: Robert E. Dickerson
  • Forehardened high aspect ratio silver halide photographic elements and processes for their use
    Patent number: 4414304
    Abstract: Forehardened photographic elements, particularly radiographic elements, intended to produce silver images are disclosed including among hydrophilic colloid layers at least one emulsion layer containing thin tabular silver halide grains. When developed in less than 1 minute to produce a viewable silver image, these photographic elements exhibit increased covering power.
    Type: Grant
    Filed: September 30, 1982
    Date of Patent: November 8, 1983
    Assignee: Eastman Kodak Company
    Inventor: Robert E. Dickerson