Patents by Inventor J. H. Vivier Lefebvre

J. H. Vivier Lefebvre 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 eddy current detection of material discontinuities
    Patent number: 7750626
    Abstract: A method of eddy current testing without the need for lift-off compensation. Signal response features similar to those used in pulsed eddy current techniques are applied to conventional (harmonic) eddy current methods. The described method provides advantages in terms of data storage, since only two response parameters, the amplitude and phase, are sufficient to reconstruct any sinusoidal signal, therefore allowing for scanning of large surfaces.
    Type: Grant
    Filed: March 10, 2006
    Date of Patent: July 6, 2010
    Assignees: Her Majesty the Queen in right of Canada, as represented by the Minister of National Defence of Her Majesty's Canadian Government, National Research Council of Canada
    Inventors: J. H. Vivier Lefebvre, Catalin V. Mandache