Patents by Inventor Philippe Gramain

Philippe Gramain 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).

  • Membranes for selective gas separation
    Patent number: 7339008
    Abstract: The present invention relates to the use of a hydrophilic, biocompatible and biodegradable elastomer membrane or film for the selective separation of a gas mixture. Accordingly, processes for selective gas separation of a gas mixture are provided in which a gas mixture is contacted with such a membrane such that a selective portion of the gas mixture passes through the membrane.
    Type: Grant
    Filed: June 27, 2006
    Date of Patent: March 4, 2008
    Assignee: Centre National de la Recherche Scientifique
    Inventors: José-Grégorio Sanchez, Philippe Gramain
  • Membranes for selective gas separation
    Publication number: 20060236857
    Abstract: The present invention relates to the use of a hydrophilic, biocompatible and biodegradable elastomer membrane or film for the selective separation of a gas mixture. Accordingly, processes for selective gas separation of a gas mixture are provided in which a gas mixture is contacted with such a membrane such that a selective portion of the gas mixture passes through the membrane.
    Type: Application
    Filed: June 27, 2006
    Publication date: October 26, 2006
    Inventors: Jose-Gregorio Sanchez, Philippe Gramain
  • Membranes for selective gas separation
    Publication number: 20030180425
    Abstract: The invention concerns a membrane for selective gas separation. The membrane consists of an ethylene oxide copolymer or a polymeric material obtained by crosslinking such a copolymer. Said copolymer is characterised in that it consists of at least 30% in number of —CH2CH2O— units derived from ethylene oxide, and at least 2% in number of —CHR—CH2O— units derived from an oxirane bearing a crosslinkable substituent R and/or of —CHR1—CH2O— units derived from an oxirane bearing a non-crosslinkable substituent R1. The membranes are particularly useful for separating hydrophilic gases contained in a gas mixture.
    Type: Application
    Filed: March 7, 2003
    Publication date: September 25, 2003
    Inventors: Jose-Gregorio Sanchez, Philippe Gramain
  • Solid polymer electrolyte and multilayer electrochemical assembly comprising such a solid polymer electrolyte
    Patent number: 6335123
    Abstract: A solid polymer electrolyte comprises a matrix formed, at least partially, (a) of crosslinked polymer comprising units derived from ethylene oxide and units derived from ethylene oxide substituted with a reactive radical by substitution, at least part of which participates in a crosslinking bond, and (b) of at least an inonizable alkaline salt chelated in said matrix. In addition, a multilayer electrochemical assembly (1) comprises a positive electrode (2) and a current collector (6) of the negative electrode (3) and optionally of its current collector (5), the electrodes being separated by a solid polymer electrolyte (4), as previously described.
    Type: Grant
    Filed: August 16, 1999
    Date of Patent: January 1, 2002
    Assignee: Electricite de France (Servuce National)
    Inventors: Stéphane Lascaud, Paul Baudry, Philippe Gramain