Patents by Inventor Marc Fourmigue

Marc Fourmigue 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 of authenticating an object by electron paramagnetic resonance, apparatus for implementing the method, and an object useable with the method
    Patent number: 5149946
    Abstract: The invention relates to a method of authenticating an object by electron paramagnetic resonance spectroscopy, the method being characterized in that at least one authenticating substance is added to the object, said substance having an EPR peak whose width is not greater than about 1.5 gauss, with the spectroscopy being performed in a static field of an amplitude such that the substance has a resonance frequency in the radio-frequency domain, and with the width of the EPR peak of the substance being used as a criterion for discrimination.
    Type: Grant
    Filed: October 10, 1990
    Date of Patent: September 22, 1992
    Assignee: Centre National de la Recherche Scientifique (CNRS)
    Inventors: Denis Jerome, Georges Tevanian, Patrick Batail, Marc Fourmigue