Patents by Inventor Pierre Dournel

Pierre Dournel 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).

  • Compositions comprising 1,1,1,3,3-pentafluorobutane and use of these compositions
    Patent number: 7517845
    Abstract: Compositions comprising 1,1,1,3,3-pentafluorobutane and more than 5% by weight of at least one non-flammable fluoro compound, and use thereof.
    Type: Grant
    Filed: February 20, 2007
    Date of Patent: April 14, 2009
    Assignee: Solvay S.A.
    Inventors: Pierre Dournel, Pierre Barthelemy
  • Process for the Manufacture of Oxidized Starch, Oxidized Starch and Its Use
    Publication number: 20090054639
    Abstract: Process for the manufacture of oxidized starch by reacting an aqueous slurry of starch with a peroxide compound, the reaction being carried out in the presence of ozone or by irradiating the slurry with UV light, the amount of peroxide compound used being lower than 30 % by weight calculated on the basis of the weight of dry starch. The oxidized starch can be used as additive for the paper industry or for the food industry.
    Type: Application
    Filed: February 22, 2007
    Publication date: February 26, 2009
    Applicant: SOLVAY (SOCIETE ANONYME)
    Inventors: Pierre Dournel, Jean-Pierre Ganhy
  • Solvent compositions
    Patent number: 7468142
    Abstract: Composition comprising at least one hydrofluoroalkane and at least one fluoropolyether.
    Type: Grant
    Filed: November 7, 2001
    Date of Patent: December 23, 2008
    Assignee: Solvay S.A.
    Inventor: Pierre Dournel
  • Compositions Comprising 1,1,1,3,3-Pentafluorobutane And Use of These Compositions
    Publication number: 20070135326
    Abstract: Compositions comprising 1,1,1,3,3-pentafluorobutane and more than 5% by weight of at least one non-flammable fluoro compound, and use thereof.
    Type: Application
    Filed: February 20, 2007
    Publication date: June 14, 2007
    Applicant: SOLVAY S.A.
    Inventors: Pierre Dournel, Pierre Barthelemy
  • Replacement of hydrochlorofluorocarbons for polymer foam manufacture
    Publication number: 20070129453
    Abstract: Use for foam manufacture in a foam manufacturing equipment designed for use with hydrochlorofluorocarbons of a composition comprising at least one hydrofluorocarbon blowing agent and a non-halogenated polar organic compound having an atmosphere boiling point of from 30° C. to 150° C.
    Type: Application
    Filed: November 25, 2004
    Publication date: June 7, 2007
    Applicant: SOLVAY S.A.
    Inventors: Lothar Zipfel, Pierre Dournel
  • Compositions comprising 1,1,1,3,3-pentafluorobutane and use of these compositions
    Patent number: 7189339
    Abstract: Compositions comprising 1,1,1,3,3-pentafluorobutane and more than 5% by weight of at least one non-flammable fluoro compound, and use thereof.
    Type: Grant
    Filed: April 2, 2004
    Date of Patent: March 13, 2007
    Assignee: Solvay SA
    Inventors: Pierre Dournel, Pierre Barthelemy
  • Process for separating out at least one organic compound
    Publication number: 20060182689
    Abstract: Process for separating out at least one organic compound from a substrate containing the said organic compound, comprising a treatment of the substrate with an extraction medium comprising at least one fluoro compound with an atmospheric boiling point of greater than or equal to 25° C., so as to form a fraction comprising organic compound and fluoro compound.
    Type: Application
    Filed: May 19, 2004
    Publication date: August 17, 2006
    Inventors: Pierre Dournel, Michel Surbled, Bernard Mompon
  • Hydrofluorocarbon compositions
    Publication number: 20060160910
    Abstract: A composition which comprises 1,1,1,3,3-pentafluorobutane (HFC-365mfc) and 1,1,1,3,3-pentafluoropropane (HFC-245fa) in a weight ratio HFC-365mfc/HFC-245fa of from 60:40 to 75:25.
    Type: Application
    Filed: March 12, 2004
    Publication date: July 20, 2006
    Applicant: Solvay S.A.
    Inventors: Lothar Zipfel, Werner Kruecke, Karsten Boerner, Pierre Dournel, Dierk-Ingolf Recke
  • Process for the manufacture of a polymer foam
    Publication number: 20060148918
    Abstract: A process for manufacturing a polymer foam which comprises an exothermal foaming step carried out in the presence of a means for preventing heat accumulation.
    Type: Application
    Filed: August 6, 2004
    Publication date: July 6, 2006
    Applicant: SOLVAY S.A.
    Inventor: Pierre Dournel
  • Compositions comprising 1,1,1,3,3-pentafluorobutane and use of these compositions
    Patent number: 7022253
    Abstract: Compositions comprising 1,1,1,3,3-pentafluorobutane and more than 5% by weight of at least one non-flammable fluoro compound, and use thereof.
    Type: Grant
    Filed: April 16, 2004
    Date of Patent: April 4, 2006
    Assignee: Solvay (Societe Anonyme)
    Inventors: Pierre Dournel, Pierre Barthelemy
  • Compositions comprising 1,1,1,3,3-pentafluorobutane and use of these compositions
    Publication number: 20040204330
    Abstract: Compositions comprising 1,1,1,3,3-pentafluorobutane and more than 5% by weight of at least one non-flammable fluoro compound, and use thereof.
    Type: Application
    Filed: April 16, 2004
    Publication date: October 14, 2004
    Applicant: SOLVAY S.A.
    Inventors: Pierre Dournel, Pierre Barthelemy
  • Compositions comprising 1,1,1,3,3-pentafluorobutane and use of these compositions
    Publication number: 20040192573
    Abstract: Compositions comprising 1,1,1,3,3-pentafluorobutane and more than 5% by weight of at least one non-flammable fluoro compound, and use thereof.
    Type: Application
    Filed: April 2, 2004
    Publication date: September 30, 2004
    Applicant: SOLVAY S.A.
    Inventors: Pierre Dournel, Pierre Barthelemy
  • Compositions comprising perfluorobutyl methyl ether and use of said compositions
    Patent number: 6753304
    Abstract: Perfluorobutyl methyl ether forms azeotropic or pseudoazeotropic compositions with esters. These compositions can be used in particular as solvent for cleaning and defluxing electronic components, for degreasing metals, for removing water adsorbed at the surface of solids and for fixing a toner to a printing substrate.
    Type: Grant
    Filed: August 28, 2000
    Date of Patent: June 22, 2004
    Assignee: Solvay (Societe Anonyme)
    Inventors: Pierre Barthelemy, Pierre Dournel
  • Compositions comprising 1,1,1,3,3-pentafluorobutane and use of these compositions
    Patent number: 6743765
    Abstract: Compositions comprising 1,1,1,3,3-pentafluorobutane and more than 5% by weight of at least one non-flammable fluoro compound, and use thereof.
    Type: Grant
    Filed: October 22, 2003
    Date of Patent: June 1, 2004
    Assignee: Solvay (Societe Anonyme)
    Inventors: Pierre Dournel, Pierre Barthelemy
  • Solvent compositions
    Publication number: 20040013610
    Abstract: Composition comprising at least one hydrofluoroalkane and at least one fluoropolyether.
    Type: Application
    Filed: May 7, 2003
    Publication date: January 22, 2004
    Inventor: Pierre Dournel
  • Compositions comprising 1,1,1,3,3-pentafluorobutane and use of these compositions
    Patent number: 6660709
    Abstract: Compositions comprising 1,1,1,3,3-pentafluorobutane and more than 5% by weight of at least one non-flammable fluoro compound, and use thereof. No figures.
    Type: Grant
    Filed: July 30, 2001
    Date of Patent: December 9, 2003
    Assignee: Solvay (Societe Anonyme)
    Inventors: Pierre Dournel, Pierre Barthelemy
  • Azeotropic or pseudo-azeotropic composition and use of these compositions
    Patent number: 6303668
    Abstract: 1,1,1,3,3-Pentafluorobutane forms azeotropic or pseudoazeotropic compositions with alkanes possessing 5 or 6 carbon atoms. These compositions can be used in particular as blowing agents in polymeric cellular foams.
    Type: Grant
    Filed: November 22, 1999
    Date of Patent: October 16, 2001
    Assignee: Solvay (Societe Anonyme)
    Inventors: Pierre Barthelemy, Olivier Buyle, Pierre Dournel
  • Process for the manufacture of poly(arylene sulphide)
    Patent number: 5380821
    Abstract: Process for the manufacture of poly(arylene sulphide) comprising the reaction of a dihalogenated aromatic compound with alkali metal sulphide in a polar organic solvent in the presence of a compound chosen from sulphimides and their alkali metal salts.
    Type: Grant
    Filed: June 14, 1993
    Date of Patent: January 10, 1995
    Assignee: Solvay (Societe Anonyme)
    Inventors: Pierre Dournel, Danny Van Hoyweghen, Ardechir Momtaz