Patents by Inventor Stephane Cadra

Stephane Cadra 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).

  • Patent number: 10759921
    Abstract: A method for producing an aqueous foam comprising (a) preparing a solution comprising at least one surfactant and at least one protic polar solvent, (b) bringing the solution into contact with a pressurised gas to obtain a two-phase mixture, and (c) injecting the two-phase mixture to obtain the aqueous foam after expansion or dispersion of the gas. The solution further comprises at least one gelling compound chosen from a non-nitrogenous polysaccharide and gelatin. An aqueous foam obtained by such method and uses of the same, in particular in the fields of decontamination, the purification of effluents, or the defusing or containment of explosive devices or suspected explosive devices.
    Type: Grant
    Filed: November 17, 2015
    Date of Patent: September 1, 2020
    Assignee: COMMISSARIAT A'LENERGIE ATOMIQUE ET AUX ENERGIES ALTERNATIVES
    Inventors: Stephane Cadra, Jean-Felix Salas, Alexia Balland-Longeau, Francois Garonne, Sylvain Faure, Bruno Imbert
  • Publication number: 20180355139
    Abstract: The invention relates to a method for producing an aqueous foam comprising the following steps: (a) preparing a solution comprising at least one surfactant and at least one protic polar solvent, (b) bringing the solution into contact with a pressurised gas, whereby a two-phase mixture is obtained, and (c) injecting the two-phase mixture, whereby, after expansion or dispersion of the gas, the aqueous foam is obtained. According to the invention, the solution further comprises at least one gelling compound chosen from a non-nitrogenous polysaccharide and gelatin. The invention also relates to the aqueous foam obtained by such a method and to the uses of same, in particular in the fields of decontamination, the purification of effluents, or the defusing or containment of explosive devices or suspected explosive devices.
    Type: Application
    Filed: November 17, 2015
    Publication date: December 13, 2018
    Applicant: COMMISSARIAT A L'ENERGIE ATOMIQUE ET AUX ENERGIES ALTERNATIVES
    Inventors: Stephane Cadra, Jean-Felix Salas, Alexia Balland-Longeau, Francois Garonne, Sylvain Faure, Bruno Imbert
  • Patent number: 10040885
    Abstract: A method for preparing a polymeric material doped with at least one first metal element and at least one second metal element, including: a) copolymerization of a first monomer containing a first metal element and of a second monomer containing a chelating group of a second metal element, to obtain a polymeric material containing (i) recurrent units deriving from the polymerization of the first monomer, the recurrent units containing the first metal element and (ii) recurrent units deriving from the polymerization of the second monomer, the recurrent units containing chelating groups of a second metal element, and when the first metal element is different from the second metal element, b) contacting the material from a) with a solution containing the second metal element, in return for which the second metal element is complexed with the chelating groups, where b) is optional when the first and second metal element are identical.
    Type: Grant
    Filed: February 6, 2015
    Date of Patent: August 7, 2018
    Assignee: COMMISSARIAT A L'ENERGIE ATOMIQUE ET AUX ENERGIES ALTERNATIVES
    Inventors: Stephane Cadra, Pierre Pouponneau, Alexia Balland Longeau
  • Patent number: 10040756
    Abstract: The invention relates to sulfonate compounds with the following formula (I): in which: R2 represents an ethyl group, an n-propyl group or an isopropyl group; when R2 is an ethyl group, R1 is an ethyl group, an n-propyl group or an n-butyl group; when R2 is an n-propyl group, R1 is a methyl group, an ethyl group, an n-propyl group or an n-butyl group; or when R2 is an isopropyl group, R1 is a methyl group, an ethyl group, an n-propyl group or an n-butyl group. Use of these compounds as electrolyte solvent for lithium batteries.
    Type: Grant
    Filed: February 18, 2014
    Date of Patent: August 7, 2018
    Assignee: RENAULT s.a.s.
    Inventors: Stephane Cadra, Charlotte Beord, Nathalie Pierre, Herve Galiano
  • Publication number: 20170088649
    Abstract: The invention relates to a method for preparing a polymeric material doped with at least one first metal element and at least one second metal element, said at least one first metal element and said at least one second metal element being identical or different from each other, said method comprising: a) a step for copolymerization of at least one first monomer comprising at least one first metal element and of at least one second monomer comprising at least one chelating group of at least one second metal element, in return for which a polymeric material is obtained comprising recurrent units from the polymerization of said first monomer, said recurrent units comprise said at least one first metal element and comprising recurrent units from the polymerization of said second monomer, said recurrent units comprising chelating groups of at least one second metal element; and when said first metal element is different from said second metal element, said method further comprising a step b) for putting the mat
    Type: Application
    Filed: February 6, 2015
    Publication date: March 30, 2017
    Inventors: Stephane CADRA, Pierre POUPONNEAU, Alexia BALLAND LONGEAU
  • Publication number: 20160137597
    Abstract: The invention relates to sulfonate compounds with the following formula (I): in which: R2 represents an ethyl group, an n-propyl group or an isopropyl group; when R2 is an ethyl group, R1 is an ethyl group, an n-propyl group or an n-butyl group; when R2 is an n-propyl group, R1 is a methyl group, an ethyl group, an n-propyl group or an n-butyl group; or when R2 is an isopropyl group, R1 is a methyl group, an ethyl group, an n-propyl group or an n-butyl group. Use of these compounds as electrolyte solvent for lithium batteries.
    Type: Application
    Filed: February 18, 2014
    Publication date: May 19, 2016
    Inventors: Stephane CADRA, Charlotte Beord, Nathalie Pierre, Herve Galiano
  • Publication number: 20150155600
    Abstract: The invention relates to electrolytic compositions comprising: at least one coordination complex comprising lithium and one or several ligands thereof, this (these) ligand(s) corresponding to a phenate compound comprising at least one trifluoromethyl group; and at least one carbonate solvent.
    Type: Application
    Filed: June 7, 2013
    Publication date: June 4, 2015
    Inventors: Herve Galiano, Stephane Cadra, Jerome Thibonnet, Daniel Lemordant