Patents by Inventor Laurence Chareyre

Laurence Chareyre 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 the treatment of an aqueous nitric solution resulting from dissolving spent nuclear fuel, said method being performed in a single cycle and without requiring any operation involving reductive stripping of plutonium
    Patent number: 10249396
    Abstract: A method for the treatment of an aqueous solution resulting from the dissolution of a spent nuclear fuel in nitric acid, allowing the uranium and plutonium contained in the solution to be extracted, separated and decontaminated in a single cycle, without requiring any operation involving a reductive stripping of plutonium. Applications for the method include the processing of uranium-based and/or plutonium-based spent nuclear fuels.
    Type: Grant
    Filed: July 28, 2016
    Date of Patent: April 2, 2019
    Assignees: COMMISSARIAT A L'ENERGIE ATOMIQUE ET AUX ENERGIES ALTERNATIVES, ORANO CYCLE
    Inventors: Manuel Miguirditchian, Christian Sorel, Sylvain Costenoble, Vincent Vanel, Xavier Heres, Pascal Baron, Michel Masson, Laurence Chareyre
  • METHOD FOR THE TREATMENT OF AN AQUEOUS NITRIC SOLUTION RESULTING FROM DISSOLVING SPENT NUCLEAR FUEL, SAID METHOD BEING PERFORMED IN A SINGLE CYCLE AND WITHOUT REQUIRING ANY OPERATION INVOLVING REDUCTIVE STRIPPING OF PLUTONIUM
    Publication number: 20180218798
    Abstract: A method for the treatment of an aqueous solution resulting from the dissolution of a spent nuclear fuel in nitric acid, allowing the uranium and plutonium contained in the solution to be extracted, separated and decontaminated in a single cycle, without requiring any operation involving a reductive stripping of plutonium. Applications for the method include the processing of uranium-based and/or plutonium-based spent nuclear fuels.
    Type: Application
    Filed: July 28, 2016
    Publication date: August 2, 2018
    Inventors: Manuel Miguirditchian, Christian Sorel, Sylvain Costenoble, Vincent Vanel, Xavier Heres, Pascal Baron, Michel Masson, Laurence Chareyre
  • Grouped separation of actinides from a strongly acidic aqueous phase
    Patent number: 8557120
    Abstract: The invention relates to a process for collectively separating all the actinides (III), (IV), (V) and (VI) present in a strongly acidic aqueous phase, from the fission products, and in particular from the lanthanides, which are also present in this phase, using two extractants that operate in unconnected chemical fields. Applications: reprocessing of irradiated nuclear fuels, especially to recover plutonium, neptunium, americium, curium and, possibly, uranium present in trace amounts, in a grouped manner but selectively with respect to the lanthanides, from a solution for dissolution of an irradiated nuclear fuel, downstream of a uranium extraction cycle.
    Type: Grant
    Filed: April 19, 2007
    Date of Patent: October 15, 2013
    Assignee: Commissariat a l'Energie Atomique
    Inventors: Xavier Heres, Manuel Miguirditchian, Pascal Baron, Laurence Chareyre
  • GROUPED SEPARATION OF ACTINIDES FROM A HIGHLY ACIDIC AQUEOUS PHASE
    Publication number: 20090184051
    Abstract: The invention relates to a process for collectively separating all the actinides (III), (IV), (V) and (VI) present in a strongly acidic aqueous phase, from the fission products, and in particular from the lanthanides, which are also present in this phase, using two extractants that operate in unconnected chemical fields. Applications: reprocessing of irradiated nuclear fuels, especially to recover plutonium, neptunium, americium, curium and, possibly, uranium present in trace amounts, in a grouped manner but selectively with respect to the lanthanides, from a solution for dissolution of an irradiated nuclear fuel, downstream of a uranium extraction cycle.
    Type: Application
    Filed: April 19, 2007
    Publication date: July 23, 2009
    Inventors: Xavier Heres, Manuel Miguirditchian, Pascal Baron, Laurence Chareyre