Patents by Inventor Robert J. Agnew

Robert J. Agnew 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).

  • Pulse-echo method and system for testing wall thicknesses
    Patent number: 4022055
    Abstract: A method and system for improving the pulse-echo type of testing to determine wall thicknesses. It is particularly applicable to pipes. There is a pulse directed transversely to the wall so that reflections from the inner and outer surfaces will indicate the thickness, and another pulse is directed at an angle to the wall with time spacing. The angled pulse path permits penetration so that the presence of an undesirable type of discontinuity will cause an additional reflection which distinguishes this type of discontinuity.
    Type: Grant
    Filed: December 2, 1974
    Date of Patent: May 10, 1977
    Assignee: Texaco Inc.
    Inventors: Norman E. Flournoy, David A. Morris, Robert J. Agnew