Patents by Inventor Gérald Pourcelly

Gérald Pourcelly 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).

  • Separation method and device with semi-permeable membranes comprising sulphonated polyimides
    Patent number: 6596838
    Abstract: The invention relates to a semi-permeable membrane separation process and device in which the said membranes comprise sulphonated polyimides. The present invention also relates to the use of sulphonated polyimide membranes in separation processes and devices using semi-permeable membranes.
    Type: Grant
    Filed: August 17, 2001
    Date of Patent: July 22, 2003
    Assignees: Commissariat A l'Energie Atomique, Centre National de la Recherche
    Inventors: Michel Pinery, Gérald Pourcelly, Régis Mercier
  • Grafted microporous separator for electrochemical generator and a process for its production
    Patent number: 5578400
    Abstract: A separator for an electrochemical generator is constituted by a microporous polyolefin film grafted with at least one monomer selected from diethyleneglycol dimethacrylate, furfuryl acrylate and a diethyleneglycol dimethacrylate/acrylic acid mixture. In a process for the production of a separator of this kind grafting of the monomer is carried out in three stages:irradiation of the film,if required, storage of the irradiated film,immersion of the irradiated film in the grafting solution comprising the monomer, a solvent, and at least one additive. The separator may be used in an electrochemical generator with either an aqueous or nonaqueous electrolyte where the salt concentration is between 1M and 2M.
    Type: Grant
    Filed: February 12, 1996
    Date of Patent: November 26, 1996
    Assignee: Saft
    Inventors: Jean-Luc Gineste, Gerald Pourcelly, John Brunea, Francoise Perton, Michel Broussely