Patents by Inventor Estelle Vanhaecke

Estelle Vanhaecke 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).

  • Dehydration of methanol to dimethyl ether using catalysts based on a zeolite supported on silicon carbide
    Patent number: 9073837
    Abstract: A process for the preparation of dimethyl ether by catalytic dehydration of methanol, in which there is used a catalyst based on a zeolite immobilized on a silicon carbide support, for example a zeolite of type ZSM-5 supported on silicon carbide extrudates or on a silicon carbide cellular foam.
    Type: Grant
    Filed: December 7, 2007
    Date of Patent: July 7, 2015
    Assignees: CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE (C.N.R.S.), UNIVERSITE LOUIS PASTEUR
    Inventors: Svetlana Ivanova, Estelle Vanhaecke, Suzanne Libs, Benoit Louis, Cuong Pham-Huu, Marc Jacques Marie Ledoux
  • COMPOSIT CONSISTING OF NANOTUBES OR NANOFIBRES ON A B-SIC FILM
    Publication number: 20100297428
    Abstract: The invention relates to a method of producing a composite comprising nanofibres or nanotubes on a porous ?-SiC substrate, said method comprising the following steps: (a) a catalyst for growing nanotubes or nanofibres is incorporated into said porous ?-SiC substrate or into an SiC precursor; (b) carbon nanotubes or nanofibres are grown from a mixture comprising hydrogen and at least one hydrocarbon; and (c) optionally, said carbon nanotubes or nanofibres are converted to SiC nanofibres. This composite may be used as a catalyst or catalyst support.
    Type: Application
    Filed: April 30, 2008
    Publication date: November 25, 2010
    Inventors: Cuong Pham-Huu, Charlotte Pham, Patrick Nguyen, Estelle Vanhaecke, Svetlana Ivanova, Adrien Deneuve
  • DEHYDRATION OF METHANOL TO DIMETHYL ETHER USING CATALYSTS BASED ON A ZEOLITE SUPPORTED ON SILICON CARBIDE
    Publication number: 20100010272
    Abstract: A process for the preparation of dimethyl ether by catalytic dehydration of methanol, in which there is used a catalyst based on a zeolite immobilized on a silicon carbide support, for example a zeolite of type ZSM-5 supported on silicon carbide extrudates or on a silicon carbide cellular foam.
    Type: Application
    Filed: December 7, 2007
    Publication date: January 14, 2010
    Applicant: UNIVERSITE LOUIS PASTEUR
    Inventors: Svetlana Ivanova, Estelle Vanhaecke, Suzanne Libs, Benoit Louis, Cuong Pham-Huu, Marc Ledoux
  • Catalytic filter based on silicon carbide (?-SiC) for combustion of soot derived from exhaust gases from an internal combustion engine
    Patent number: 7479265
    Abstract: This invention relates to ?-SiC foam parts with a specific surface area preferably equal to at least 5 m2/g and with at least two zones A and B with a different cellular porosity distribution, wherein the parts were made by chemical transformation of a porous precursor medium comprising at least two blocks A? and B?, each having a different cellular porosity distribution, and in that the at least two zones A and B are derived from the chemical transformation of the two blocks A? and B?. This foam, optionally after deposition of an active layer, may be used as a filter medium in cartridges designed for the purification of exhaust gases. The invention also relates to manufacturing processes for preparing such a filter medium.
    Type: Grant
    Filed: October 14, 2004
    Date of Patent: January 20, 2009
    Assignees: SICAT, Entre National de la Recherche Scientifigue, Universite Louis Pasteur de Strasbourg
    Inventors: Charlotte Pham, Laurie Pesant, Pierre Bernhardt, Michel Wolf, Cuong Pham-Huu, Marc-Jacques Ledoux, Michel Kartheuser, Estelle Vanhaecke
  • Catalytic filter based on silicon carbide (beta-SiC) for combustion of soot derived from exhaust gases from an internal combustion engine
    Publication number: 20050159292
    Abstract: This invention relates to ?-SiC foam parts with a specific surface area preferably equal to at least 5 m2/g and with at least two zones A and B with a different cellular porosity distribution, wherein the parts were made by chemical transformation of a porous precursor medium comprising at least two blocks A? and B?, each having a different cellular porosity distribution, and in that the at least two zones A and B are derived from the chemical transformation of the two blocks A? and B?. This foam, optionally after deposition of an active layer, may be used as a filter medium in cartridges designed for the purification of exhaust gases. The invention also relates to manufacturing processes for preparing such a filter medium.
    Type: Application
    Filed: October 14, 2004
    Publication date: July 21, 2005
    Applicants: SICAT, Centre National de la Recherche Scientifique, Universite Louis Pasteur de Strasbourg
    Inventors: Charlotte Pham, Laurie Pesant, Pierre Bernhardt, Michel Wolf, Cuong Pham-Huu, Marc-Jacques Ledoux, Michel Kartheuser, Estelle Vanhaecke