Patents by Inventor Thomas MARCHAIS

Thomas MARCHAIS 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 assessing the concentration of uranium in a sample by gamma spectrometry, and associated device
    Patent number: 11782045
    Abstract: A method for assessing the mass concentration of uranium in a sample of uranium-bearing material by gamma spectrometry, includes a) acquiring (200) an energy spectrum of gamma radiation from the sample using a scintillator detector, the energy spectrum (100) comprising at least a first energy band (110) between 87 keV and 110 keV, and a second energy band (120) between 560 keV and 660 keV, the second energy band comprising at least one energy line (130) at 609 keV from 214Bi, b) calculating (210) an initial mass concentration of uranium (CmU0) using the energy spectrum, c) measuring (220) a parameter representative of the height of the sample and a parameter representative of the density of the sample, d) calculating (230) a corrective coefficient (K), and e) calculating (240) a corrected mass concentration of uranium (CmU) using the initial mass concentration of uranium (CmU0) and the corrective coefficient (K).
    Type: Grant
    Filed: November 13, 2019
    Date of Patent: October 10, 2023
    Assignees: ORANO MINING, COMMISSARIAT À L'ÉNERGIE ATOMIQUE ET AUX ÉNERGIES ALTERNATIVES
    Inventors: Thomas Marchais, Bertrand Perot, Cédric Carasco, Jean-Luc Ma, Hervé Toubon, Romain Goupillou
  • METHOD FOR ASSESSING THE CONCENTRATION OF URANIUM IN A SAMPLE BY GAMMA SPECTROMETRY, AND ASSOCIATED DEVICE
    Publication number: 20220011287
    Abstract: A method for assessing the mass concentration of uranium in a sample of uranium-bearing material by gamma spectrometry, includes a) acquiring (200) an energy spectrum of gamma radiation from the sample using a scintillator detector, the energy spectrum (100) comprising at least a first energy band (110) between 87 keV and 110 keV, and a second energy band (120) between 560 keV and 660 keV, the second energy band comprising at least one energy line (130) at 609 keV from 214Bi, b) calculating (210) an initial mass concentration of uranium (CmU0) using the energy spectrum, c) measuring (220) a parameter representative of the height of the sample and a parameter representative of the density of the sample, d) calculating (230) a corrective coefficient (K), and e) calculating (240) a corrected mass concentration of uranium (CmU) using the initial mass concentration of uranium (CmU0) and the corrective coefficient (K).
    Type: Application
    Filed: November 13, 2019
    Publication date: January 13, 2022
    Inventors: Thomas MARCHAIS, Bertrand PEROT, Cédric CARASCO, Jean-Luc MA, Hervé TOUBON, Romain GOUPILLOU