Patents by Inventor Jerome Rousselle

Jerome Rousselle 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 coprecipitation of actinides in different oxidation states and method for preparation of mixed compounds of actinides
    Patent number: 7829043
    Abstract: Method for coprecipitation (or simultaneous precipitation) of at least one actinide in oxidation state (IV) with at least one actinide in oxidation state (III), wherein: a solution i.e. mixture of actinide(s) in oxidation state (IV) and actinide(s) in oxidation state (III) is prepared by adding to it a singly charged cation whose presence makes it possible to stabilize the aforementioned oxidation states in the mixture, or a singly charged cation which does not act to stabilize the aforementioned oxidation states in the mixture; a solution containing oxalate ions is mixed with the said mixture of actinides in order to carry out coprecipitation, i.e. simultaneous precipitation, of the said actinides in oxidation states (IV) and (III) and a fraction of the singly charged cation. According to another embodiment, a solution i.e.
    Type: Grant
    Filed: May 27, 2005
    Date of Patent: November 9, 2010
    Assignees: Commissariat a l'Energie Atomique, Compagnie Generale des Matieres Nucleaires
    Inventors: Stéphane Grandjean, André Beres, Christophe Maillard, Jérôme Rousselle
  • Method for coprecipitation of actinides in different oxidation states and method for preparation of mixed compounds of actinides
    Publication number: 20050288542
    Abstract: Method for coprecipitation (or simultaneous precipitation) of at least one actinide in oxidation state (IV) with at least one actinide in oxidation state (III), wherein: a solution i.e. mixture of actinide(s) in oxidation state (IV) and actinide(s) in oxidation state (III) is prepared by adding to it a singly charged cation whose presence makes it possible to stabilize the aforementioned oxidation states in the mixture, or a singly charged cation which does not act to stabilize the aforementioned oxidation states in the mixture; a solution containing oxalate ions is mixed with the said mixture of actinides in order to carry out coprecipitation, i.e. simultaneous precipitation, of the said actinides in oxidation states (IV) and (III) and a fraction of the singly charged cation. According to another embodiment, a solution i.e.
    Type: Application
    Filed: May 27, 2005
    Publication date: December 29, 2005
    Inventors: Stephane Grandjean, Andre Beres, Christophe Maillard, Jerome Rousselle