Patents by Inventor David Leedham

David Leedham 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).

  • Methods, systems and computer program products for color matching
    Patent number: 6925205
    Abstract: A method and system of image processing on a computer, and a computer program product adapted for image processing, wherein a digital image of an article is imported into a computer, the digital image is color-corrected, an internal palette is generated from a database of predetermined color attributes and applied to the color-corrected digital image so as to generate a second digital image, and wherein a third digital image corresponding to the second digital image is generated, but replacing the predetermined color attributes with vivid color attributes. The present invention is of particular utility in the manufacture of dental prostheses from ceramics materials which substantially match a person's natural tooth colors.
    Type: Grant
    Filed: July 20, 2001
    Date of Patent: August 2, 2005
    Assignee: Digital Colour Measurement Limited
    Inventors: David Leedham, Derek Priestley, Malcolm Gill, Stephen Martin Burkinshaw, Brian Nattress
  • Improvements Relating to Image Processing
    Publication number: 20020048400
    Abstract: A method and system of image processing on a computer, and a computer program product adapted for image processing, wherein a digital image of an article is imported into a computer, the digital image is color-corrected, an internal palette is generated from a database of predetermined color attributes and applied to the color-corrected digital image so as to generate a second digital image, and wherein a third digital image corresponding to the second digital image is generated, but replacing the predetermined color attributes with vivid color attributes. The present invention is of particular utility in the manufacture of dental prostheses from ceramics materials which substantially match a person's natural tooth colors.
    Type: Application
    Filed: July 20, 2001
    Publication date: April 25, 2002
    Inventors: David Leedham, Derek Priestley, Malcolm Gill, Stephen Martin Burkinshaw, Brian Nattress