Patents by Inventor Roger Le Cren

Roger Le Cren 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).

  • Composite structures of membranes that are selectively permeable to hydrogen and combustible gas processors using same
    Patent number: 7449052
    Abstract: The invention relates to a composite structure consisting of a relatively long filtration bar comprising, from the outside, an ultra-thin layer (26) that is selectively permeable to hydrogen and made from palladium or silver alloy. Said layer is disposed on a permeable, rigid, refractory substrate consisting of a more or less solid body (30) that is covered with an intermediary thin layer (28) having a relatively smooth surface. The body (30) and the intermediary layer (28) are made respectively by sintering with fine and ultra-fine Inconel grains. A rigid metallic axial structure (32) is embedded in the body (30). Veinlets (31), which are made in the body (30) through the destruction of thermo-destructible wires during sintering, increase the permeability of the substrate. The invention is particularly applicable to hydrogen-producing combustible gas processors.
    Type: Grant
    Filed: February 14, 2002
    Date of Patent: November 11, 2008
    Assignee: Compagnie Europeenne des Technologies de l'Hydrogene
    Inventors: Claude Etievant, Dominique De Lapparent, Fanny Gaillard, Roger Le Cren, Karine Pointet
  • Composite structures of membranes that are selectively permeable to hydrogen and combustible gas processors using same
    Publication number: 20050072304
    Abstract: The invention relates to a composite structure consisting of a relatively long filtration bar comprising, from the outside, an ultra-thin layer (26) that is selectively permeable to hydrogen and made from palladium or silver alloy. Said layer is disposed on a permeable, rigid, refractory substrate consisting of a more or less solid body (30) that is covered with an intermediary thin layer (28) having a relatively smooth surface. The body (30) and the intermediary layer (28) are made respectively by sintering with fine and ultra-fine Inconel grains. A rigid metallic axial structure (32) is embedded in the body (30). Veinlets (31), which are made in the body (30) through the destruction of thermo-destructible wires during sintering, increase the permeability of the substrate. The invention is particularly applicable to hydrogen-producing combustible gas processors.
    Type: Application
    Filed: February 14, 2002
    Publication date: April 7, 2005
    Inventors: Claude Etievant, Dominique De Lapparent, Fanny Gaillard, Roger Le Cren, Karine Pointet