Patents by Inventor Robert A. Soden

Robert A. Soden 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).

  • Apparatus and method for determining thickness
    Patent number: 4413517
    Abstract: Apparatus and method for measuring the thickness of a test piece by obtaining the acoustic velocity of the test piece where an ultrasonic wave is refracted into the test piece at a first point and the wave travels substantially parallel to the surface and the transit time to a second point where the wave is refracted out of the test piece is measured. The distance between the first and second points is known and the ultrasonic wave is initially transmitted into a member of different acoustic velocity than the test piece to produce the subsurface wave in the test piece.
    Type: Grant
    Filed: December 24, 1980
    Date of Patent: November 8, 1983
    Assignee: Sonic Instruments, Inc.
    Inventor: Robert A. Soden