Patents by Inventor Jacques Henri Foos

Jacques Henri Foos 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 separating metals such as zirconium and hafnium
    Patent number: 7063792
    Abstract: A method for separating a metal (a) from a metal (2), preferably zirconium from hafnium, which consists in dissolving said metals in an aqueous solution wherein said metals are in a state preventing them from passing through a nanofiltration membrane; treating the aqueous medium with a ligand, for example EDTA, which is complexed with metal (1) and/or metal (2), then in passing the resulting treated medium on a filtering membrane allowing through the ligand-metal complexes, but retaining the metals not complexed with the ligand.
    Type: Grant
    Filed: September 10, 2001
    Date of Patent: June 20, 2006
    Assignee: Compagnie Europeenne du Zirconium CEZUS
    Inventors: Noël Ozanne, Marc Lionel Lemaire, Alain Jean-Louis Guy, Jacques Henri Foos, Stéphane Pellet-Rostaing, Frédéric Chitry
  • Method for separating metals such as zirconium and hafnium
    Publication number: 20040011739
    Abstract: The invention concerns a method for separating a metal (1) from a metal (2), preferably zirconium from hafnium, which consists in dissolving said metals in an aqueous solution wherein said metals are in a state preventing them from passing through a nanofiltration membrane; treating the aqueous medium with a ligand, for example EDTA, which is complexed with metal (1) and/or metal (2), then in passing the resulting treated medium on a filtering membrane allowing through the ligand-metal complexes, but retaining the metals not complexed with the ligand.
    Type: Application
    Filed: June 19, 2003
    Publication date: January 22, 2004
    Inventors: Noel Ozanne, Marc Lionel Lemaire, Alain Jean-Louis Guy, Jacques Henri Foos, Stephane Pellet-Rostaing, Frederic Chitry