Patents by Inventor Pierre Granier

Pierre Granier 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).

  • Electromagnetic detector responsive to a modification of a magnetic field
    Patent number: 4232285
    Abstract: An electromagnetic detector designed to monitor road traffic, responsive to a modification of an electromagnetic field produced by the presence of a metallic mass in the vicinity thereof, comprises a metal base on which are disposed a transmitting coil creating a field and a receiving coil whose axis deviates from the perpendicular to the base. The receiving coil detects a measuring field created by the currents induced in the base by the transmitted field. The processed signal is the resultant of the signal produced by the presence of a metallic mass in the transmitted field and by the signal due to the measuring field.
    Type: Grant
    Filed: November 18, 1977
    Date of Patent: November 4, 1980
    Assignee: Thomson-CSF
    Inventors: Jean-Raymond Narbaits-Jaureguy, Henri Billottet, Pierre Granier