Patents by Inventor Robert Gedessaud

Robert Gedessaud 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).

  • Polyacrylic acid membranes for electrochemical use
    Patent number: 4109066
    Abstract: The invention relates to a semi-permeable membrane for a lead-acid battery. The membrane has a microporous structure comprising a first polymer and a second polymer intimately mixed together, and is characterized by the fact that the first polymer is chosen from among the following polymers: polyacrylic acid, polymethacrylic acid, a copolymer with a high proportion of acrylic or methacrylic acid, a mixture of these polymers, the average molecular weight of these polymers lying between 10,000 and a few millions and preferably between 50,000 and one million, the second polymer being soluble in water.
    Type: Grant
    Filed: December 14, 1977
    Date of Patent: August 22, 1978
    Assignees: Compagnie Generale d'Electricite, Institut National de Recherche Chimique Appliquee Ircha
    Inventors: Richard Dick, Georges Feuillade, Robert Gedessaud, Louis Nicolas