Patents by Inventor Marc Hebrant

Marc Hebrant 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 by micellar ultrafiltration that can be used to process radioactive waste
    Patent number: 6113796
    Abstract: The present invention relates to a method for separating metals by micellar ultrafiltration, that can be used to process radioactive waste.This process consists of adding to the aqueous solution a complexing anionic surfactant having the formula: ##STR1## M.sup.+ =cation, for example NA.sup.+m=1 or 2R=aliphatic group of at least eight carbon atoms, and optionally a nonionic surfactant such as Triton X-100 or Brij 35 to produce micelles (10) in the solution, and subsequently of filtering the solution through an ultrafiltration membrane (3) to retain the previously formed micelles.
    Type: Grant
    Filed: December 16, 1998
    Date of Patent: September 5, 2000
    Assignee: Compagnie Generale des Matieres Nucleaires
    Inventors: Philippe Tounissou, Marc Hebrant, Ludwig Rodehuser, Christian Tondre