Patents by Inventor David Oswald Clayden

David Oswald Clayden 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).

  • Biometric identification of individuals by use of subcutaneous vein patterns
    Patent number: 5787185
    Abstract: A method of verifying the identity of an individual comprises capturing an image of the subcutaneous vein pattern at a predetermined region of the individual, converting the captured image to a plurality of stored values representative of the intensity of said image at specified relative locations, processing the stored values to produce a second plurality of stored values representative of the image of the vein pattern having enhanced contrast and subjecting the second plurality of stored values to a thresholding process to select those above a predetermined value and storing a set of measurements derived from the selected ones of said second plurality of stored values for comparison with a corresponding set of measurements made on the individual.
    Type: Grant
    Filed: September 29, 1995
    Date of Patent: July 28, 1998
    Assignee: British Technology Group Ltd.
    Inventor: David Oswald Clayden