Patents by Inventor Earl H. Brazeal, Jr.

Earl H. Brazeal, Jr. 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).

  • Method and apparatus for plural document detection
    Patent number: 6212130
    Abstract: The presence of overlapped sheets on a paper transport is detected by employing such sheets as an acoustic interference filter. A beam of ultrasonic energy of appropriate frequency, angularly oriented to the planar transport path, will be attenuated to a much greater extent than the attenuation calculated based on the attenuation of a single sheet, as a result of destructive combining of wavefronts reflected from the facing surfaces of the overlapped sheets.
    Type: Grant
    Filed: March 8, 1999
    Date of Patent: April 3, 2001
    Assignee: Scan-Optics, Inc.
    Inventors: Earl H. Brazeal, Jr., James D. Callahan, James M. Soussounis, David H. Stone