Patents by Inventor Robert T. Shillito

Robert T. Shillito 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: 5521722
    Abstract: Apparatus for handling digital representations of documents which are to be provided with a number of images. The apparatus comprises a first store for storing digital data defining the image content of each pixel of each image and a color generator for generating data defining, independently of the image contact data, the color of each pixel of each image or combinations of images as defined by a user. A processor selectively combines the image content data and the color data to enable selected images to be viewed separately or in combination as allowed by the layering structure provided.
    Type: Grant
    Filed: July 13, 1992
    Date of Patent: May 28, 1996
    Assignee: Thomas De La Rue Limited
    Inventors: Robert H. Colvill, Derek R Lowther, Colin N. Shenton, Robert T. Shillito, Rosemary Trinder, Andrew F. Wallis