Patents by Inventor Viviane Questaigne

Viviane Questaigne 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).

  • Composite element incorporating a polyether or copolyether, its preparation process and its use for extracting and separating metal cations
    Patent number: 5200041
    Abstract: The invention relates to a composite element incorporating a support of an organic, electricity conducting, polyaromatic structure product, such as graphite, covered with a polymer or copolymer of dibenzoethers of formula: ##STR1## in which m=0 or 1 to 10, n=0 or 1 to 10, m+n.ltoreq.10, p=0 or 1 to 6, R.sup.1 =alkyl or aryl, R.sup.2 =alkyl or aryl.These elements are usable for absorbing metal cations present in an aqueous or organic solution.
    Type: Grant
    Filed: January 9, 1991
    Date of Patent: April 6, 1993
    Assignees: Centre National de la Recherche Scientifique, Commissariat A L'Energie Atomique
    Inventors: Jacques Simonet, Angely Lysiane, Noelle Simonet, Viviane Questaigne, Veronique Le Berre, Henri Bouas-Laurent, Jean-Pierre Desvergne