Patents by Inventor Marie-Françoise Debreuille

Marie-Françoise Debreuille 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 co-precipitating actinides and method for preparing mixed actinide oxides
    Publication number: 20040021132
    Abstract: Process for co-precipitating actinides in oxidation state (IV) in which:
    Type: Application
    Filed: April 2, 2003
    Publication date: February 5, 2004
    Inventors: Mesmin Claire, Alain Hanssens, Charles Madic, Pierre Blanc, Marie-Francoise Debreuille
  • Method and device for separating caesium, strontium and transuranium elements contained in sodium waste
    Patent number: 6517788
    Abstract: The present invention relates to a method for the continuous separation of caesium, strontium and transuranium elements contained in sodium waste which comprises the use of NaTPB, and to a device for the implementation of this method. The method of the invention comprises, in line, the following steps: (a) filling at least one of at least two feed tanks with the waste; (b) analysis of the content of Cs+, Sr++, Na+ and transuranium elements in the waste; (c) pre-treatment, adapted in relation to analysis results, of the solution in the feed tank intended to insolubilise the strontium and transuranium elements; (e1) a first caesium separation treatment; and e1a) a second caesium separation treatment, the method being conducted in continuous manner by means of the alternate use of the feed tanks.
    Type: Grant
    Filed: February 26, 2001
    Date of Patent: February 11, 2003
    Assignee: Compagnie Generale des Matieres Nucleaires
    Inventors: Marie-Françoise Debreuille, Nathalie Hubert, Jean-Paul Moulin
  • Method and device for separating caesium, strontium and transuranium elements contained in sodium waste
    Publication number: 20020113020
    Abstract: The present invention relates to a method for the continuous separation of caesium, strontium and transuranium elements contained in sodium waste which comprises the use of NaTPB, and to a device for the implementation of this method.
    Type: Application
    Filed: February 26, 2001
    Publication date: August 22, 2002
    Applicant: Compagnie Generale des Matieres Nucleaires
    Inventors: Marie-Francoise Debreuille, Nathalie Hubert, Jean-Paul Moulin