Patents by Inventor Robert Wiart

Robert Wiart 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).

  • Process for the electroextraction of zinc
    Patent number: 5194125
    Abstract: To stabilize the conditions of electroextraction of zinc in an acidic medium and in the presence of metal impurities, there is added to the electrolyte a surface-active compound comprising a perfluoroalkyl grouping linked to a polyoxyethylene, amine-oxide or betaine hydrophilic grouping.
    Type: Grant
    Filed: January 2, 1992
    Date of Patent: March 16, 1993
    Assignee: Elf Atochem S.A.
    Inventors: Chantal Cachet, Valerie Mariotte, Robert Wiart