Patents by Inventor Manuel Marechal

Manuel Marechal 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).

  • Membrane preparation method comprising the extrusion of a thermoplastic polymer bearing alkaline groupings
    Patent number: 7973089
    Abstract: The invention relates to a process for the extrusion of thermoplastic polymers having alkaline ionic groups. The process consists in preparing a mixture composed of a thermoplastic polymer having alkaline ionic groups and a plasticizer, in extruding the mixture obtained to form a film; then in washing the film obtained in aqueous medium to remove said plasticizer(s). The plasticizer is chosen from non-volatile compounds which are stable with respect to the ionic groups of the polymer, which are soluble in water or in solvents that are miscible with water, said plasticizers being chosen from the compounds that react with the ionic group of the polymer via formation of a weak bond of the hydrogen bond-type, and the compounds that react with the ionic group of the polymer via formation of a strong bond, of the ionic bond-type.
    Type: Grant
    Filed: March 9, 2006
    Date of Patent: July 5, 2011
    Assignees: Institut National Polytechnique de Grenoble, Eras-Labo, Commissariat a l'Energie Atomique, Centre National de la Recherche Scientifique
    Inventors: Jean-Yves Sanchez, Cristina Iojoiu, Regis Mercier, Manuel Marechal, Nadia El Kissi, Herve Galiano, France Chabert
  • Membrane Preparation Method Comprising the Extrusion of a Thermoplastic Polymer Bearing Alkaline Groupings
    Publication number: 20090203805
    Abstract: The invention relates to a process for the extrusion of thermoplastic polymers having alkaline ionic groups. The process consists in preparing a mixture composed of a thermoplastic polymer having alkaline ionic groups and a plasticizer, in extruding the mixture obtained to form a film; then in washing the film obtained in aqueous medium to remove said plasticizer(s). The plasticizer is chosen from non-volatile compounds which are stable with respect to the ionic groups of the polymer, which are soluble in water or in solvents that are miscible with water, said plasticizers being chosen from the compounds that react with the ionic group of the polymer via formation of a weak bond of the hydrogen bond-type, and the compounds that react with the ionic group of the polymer via formation of a strong bond, of the ionic bond-type.
    Type: Application
    Filed: March 9, 2006
    Publication date: August 13, 2009
    Inventors: Jean-Yves Sanchez, Cristina Iojoiu, Regis Mercier, Manuel Marechal, Nadia El Kissi, Herve Galiano, France Chabert
  • Microfuel cells for use particularly in portable electronic devices and telecommunications devices
    Publication number: 20040197613
    Abstract: The invention relates to a miniature fuel cell powered by a hydrocarbon fuel making heavy use of micro-technologies in making and assembling the sub-assemblies of the cell. Relative to the prior art, the main innovation consists in using a semiconductor oxidised and made porous in predetermined areas, to receive an electrolytic polymer allowing the composition of the proton exchange membrane necessary for the fuel cell to operate.
    Type: Application
    Filed: April 4, 2003
    Publication date: October 7, 2004
    Inventors: Patrick Curlier, Jean-Lue Bergamasco, Tristan Pichonat, Manuel Marechal, Bernard Gauthier-Manuel, Jean-Yves Sanchez