Patents by Inventor Stephane Bonnett

Stephane Bonnett 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 for imaging a medium through electrical measurements with a contact impedance correction
    Patent number: 9933380
    Abstract: An EIT or differential EIT method in which measurements of voltage differences between electrodes are performed according to a measurement configuration in which at least one of the electrodes injecting a current in the medium being investigated is also used for performing a measurement of the voltage difference. The contact impedances of the different electrodes are measured thanks to a counter-electrode having a contact area with the medium much higher than the contact area of a unit electrode. The measurement of a contact impedance is performed by impedance spectroscopy by comparison with the impedance spectrum of an equivalent circuit. The contact impedances allow voltage drops in the injection electrodes to be calculated the voltage differences between these electrodes and to be corrected. Alternatively, the contact impedances can be used to correct or complete the direct model.
    Type: Grant
    Filed: November 27, 2015
    Date of Patent: April 3, 2018
    Assignees: Commissariat à l'énergie atomique et aux énergies alternatives, INSTITUT NATIONAL DE LA SANTE ET DE LA RECHERCHE MEDICALE (INSERM)
    Inventors: Alexandre Fouchard, Stephane Bonnett, Olivier David, Pascale Pham
  • METHOD FOR IMAGING A MEDIUM THROUGH ELECTRICAL MEASUREMENTS WITH A CONTACT IMPEDANCE CORRECTION
    Publication number: 20160153924
    Abstract: An EIT or differential EIT method in which measurements of voltage differences between electrodes are performed according to a measurement configuration in which at least one of the electrodes injecting a current in the medium being investigated is also used for performing a measurement of the voltage difference. The contact impedances of the different electrodes are measured thanks to a counter-electrode having a contact area with the medium much higher than the contact area of a unit electrode. The measurement of a contact impedance is performed by impedance spectroscopy by comparison with the impedance spectrum of an equivalent circuit. The contact impedances allow voltage drops in the injection electrodes to be calculated the voltage differences between these electrodes and to be corrected. Alternatively, the contact impedances can be used to correct or complete the direct model.
    Type: Application
    Filed: November 27, 2015
    Publication date: June 2, 2016
    Applicants: Commissariat a L'Energie Atomique et aux Energies Alternatives, Institut National de la Sante et de la Recherche Medicale (INSERM)
    Inventors: Alexandre FOUCHARD, Stephane Bonnett, Olivier David, Pascale Pham