Patents by Inventor Nicolas Tarisien

Nicolas Tarisien 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 of removing the polymer encapsulating a nuclear fuel pellet
    Patent number: 8088312
    Abstract: Method for removing the epoxy and/or phenolic polymer encapsulating a nuclear fuel pellet comprising uranium dioxide UO2, the method comprising the following successive steps: a) the polymer is pyrolysed in a reducing atmosphere; and b) the carbon residues obtained after the pyrolysis step (a) are selectively oxidized, the oxidation being carried out at temperature above 1000° C. in an atmosphere comprising carbon dioxide CO2. Such a method makes it possible to remove the epoxy and/or phenolic polymer encapsulating the pellet while avoiding or limiting the risk of radiological contamination by the formation of U3O8.
    Type: Grant
    Filed: July 23, 2009
    Date of Patent: January 3, 2012
    Assignee: Commissariat a l'Energie Atomique et aux Energies Alternatives
    Inventors: Eric Hanus, Olivier Fiquet, Nicolas Tarisien
  • METHOD OF REMOVING THE POLYMER ENCAPSULATING A NUCLEAR FUEL PELLET
    Publication number: 20110127473
    Abstract: Method for removing the epoxy and/or phenolic polymer encapsulating a nuclear fuel pellet comprising uranium dioxide UO2, the method comprising the following successive steps: a) the polymer is pyrolysed in a reducing atmosphere; and b) the carbon residues obtained after the pyrolysis step (a) are selectively oxidized, the oxidation being carried out at temperature above 1000° C. in an atmosphere comprising carbon dioxide CO2. Such a method makes it possible to remove the epoxy and/or phenolic polymer encapsulating the pellet while avoiding or limiting the risk of radiological contamination by the formation of U3O8.
    Type: Application
    Filed: July 23, 2009
    Publication date: June 2, 2011
    Inventors: Eric Hanus, Oliver Fiquet, Nicolas Tarisien