Patents by Inventor Nadège Senamaud

Nadège Senamaud 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).

  • Confinement of caesium and/or rubidium in apatitic ceramics
    Patent number: 6489531
    Abstract: The invention relates to the containment of caesium and/or rubidium, in particular 135Cs and 137Cs in an apatitic matrix of formula: MtCaxLny(PO4)6−u(SiO4)uX in which: M represents Cs and/or Rb, Ln represents at least one trivalent cation, X represents at least one anion chosen from among 2F−, S2−, 2Cl−, 2Br−, 2I−, 2OH− and O2−, and t, x, y, and u are such that: 0<t·2.5 2·x·8 1·y·7 0·u·6 x+y+t=10 and the total number of positive charges provided by the cations M, Ca and Ln are equal to (20+u).
    Type: Grant
    Filed: May 30, 2001
    Date of Patent: December 3, 2002
    Assignee: Commissariat a l'Energie Atomique
    Inventors: Joëlle Carpena, Nadège Senamaud, Didier Bernache-Assolant, Jean-Louis Lacout, Christian Pin