Patents by Inventor Sebastien Picart

Sebastien Picart 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 preparing a mixed fuel comprising uranium and at least one actinide and/or lanthanide applying a cation exchange resin
    Patent number: 9330795
    Abstract: The invention relates to a method for preparing a fuel based on oxide, carbide, and/or oxycarbide comprising uranium and at least one actinide and/or lanthanide component, comprising the following steps: a step for preparing a load solution consisting in a nitric solution comprising said actinide and/or lanthanide in the form of actinide and/or lanthanide nitrates and uranium as a hydroxylated uranyl nitrate complex; a step for passing said solution over a cation exchange resin comprising carboxylic groups, with which the actinide and/or the lanthanide in cationic form and the uranium as uranyl remain bound to the resin; a heat treatment step of said resin so as to obtain said fuel.
    Type: Grant
    Filed: September 22, 2009
    Date of Patent: May 3, 2016
    Assignee: COMMISSARIAT A L'ENERGIE ATOMIQUE ET AUX ENERGIES
    Inventors: Sebastien Picart, Hamid Mokhtari, Isabelle Jobelin
  • METHOD FOR PREPARING A POROUS NUCLEAR FUEL
    Publication number: 20140197557
    Abstract: A method for producing a porous fuel including uranium, optionally plutonium, and optionally at least one minor actinide, the method including: a) compacting a mixture including a first type of agglomerate including uranium oxide in a form of uranium dioxide UO2, optionally plutonium oxide, and optionally at least one minor actinide oxide, and a second type of agglomerate including uranium oxide in a form of triuranium octaoxide U3O8, optionally plutonium oxide, and optionally at least one minor actinide oxide; b) reducing the compacted mixture in a reducing medium, to reduce all or part of the triuranium octaoxide U3O8 into uranium dioxide UO2, the second type of agglomerate being prepared prior to the compacting by a series of specific operations.
    Type: Application
    Filed: August 21, 2012
    Publication date: July 17, 2014
    Applicant: Commissariat a l'energie atomique et aux ene alt
    Inventors: Sebastien Picart, Elodie Remy, Thibaud Delahaye
  • METHOD FOR PREPARING A MIXED FUEL COMPRISING URANIUM AND AT LEAST ONE ACTINIDE AND/OR LANTHANIDE APPLYING A CATION EXCHANGE RESIN
    Publication number: 20110169178
    Abstract: The invention relates to a method for preparing a fuel based on oxide, carbide, and/or oxycarbide comprising uranium and at least one actinide and/or lanthanide component, comprising the following steps: a step for preparing a load solution consisting in a nitric solution comprising said actinide and/or lanthanide in the form of actinide and/or lanthanide nitrates and uranium as a hydroxylated uranyl nitrate complex; a step for passing said solution over a cation exchange resin comprising carboxylic groups, with which the actinide and/or the lanthanide in cationic form and the uranium as uranyl remain bound to the resin; a heat treatment step of said resin so as to obtain said fuel.
    Type: Application
    Filed: September 22, 2009
    Publication date: July 14, 2011
    Inventors: Sebastien Picart, Hamid Mokhtari, Isabelle Jobelin