Patents by Inventor Veronique Mathieu

Veronique Mathieu 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).

  • Process for preparing halohydrocarbons in the presence of a co-catalyst
    Patent number: 6452057
    Abstract: Halohydrocarbons comprising at least 3 carbon atoms are obtained by batchwise reaction between a haloalkane and an olefin in the presence of a catalyst and a co-catalyst. The addition of at least some of the co-catalyst is carried out gradually. At least some of the co-catalyst is recovered with a view to its re-use.
    Type: Grant
    Filed: September 29, 2000
    Date of Patent: September 17, 2002
    Assignee: Solvay (Societe Anonyme)
    Inventors: Alain Lambert, Véronique Mathieu, Charles-Marie Anciaux
  • Method for preparing of halogenated hydrocarbons
    Patent number: 6441256
    Abstract: Halohydrocarbons comprising at least 3 carbon atoms are obtained by reaction between a haloalkane and a haloolefin, in the substantial absence of nitrile, and by introducing the reactants in a molar ratio between the haloalkane and the haloolefin of less than 2. 1,1,1,3,3-Pentachloropropane can thus be obtained in good voluminal yield.
    Type: Grant
    Filed: March 20, 2000
    Date of Patent: August 27, 2002
    Assignee: Solvay (Societe Anonyme)
    Inventors: Véronique Mathieu, Francine Janssens
  • Method for the preparation of 1,1,1,3,3-pentachlorobutane
    Patent number: 6399840
    Abstract: 1,1,1,3,3-pentachlorobutane is obtained by reacting carbon tetrachloride with 2-chloro-1-propene in the presence of at least one copper (I) or (II) compound as telomerization catalyst. Advantageously, a polar compound can be present in the reaction mixture as solvent, and an amine, an amide or a trialkylphosphine oxide can be present as cocatalyst.
    Type: Grant
    Filed: December 30, 1999
    Date of Patent: June 4, 2002
    Assignee: Solvay (Societe Anonyme)
    Inventors: Jean-Paul Schoebrechts, Véronique Mathieu, Francine Janssens
  • Method for preparing halogenated hydrocarbons
    Patent number: 6399839
    Abstract: Halohydrocarbons comprising at least 3 carbon atoms are obtained by reaction between a haloalkane and an olefin in the presence of an organocopper compound as catalyst, a solvent and/or a cocatalyst. 1,1,1,3,3-Penta-chloropropane can thus be obtained in good yield under mild conditions.
    Type: Grant
    Filed: November 3, 1999
    Date of Patent: June 4, 2002
    Assignee: Solvay (Societe Anonyme)
    Inventors: Véronique Mathieu, Francine Janssens
  • Lavatory cleansing block having two fragrance regions
    Patent number: 6376442
    Abstract: A lavatory cleansing block having a perceived approximately constant intensity of fragrance throughout the life of the block, which comprises an inner region having an inner fragrance and an outer region having an outer fragrance which is different from said inner fragrance. The inner fragrance is present in a concentration by weight which is less than or equal to 1.1 times the concentration of the outer fragrance.
    Type: Grant
    Filed: August 30, 2000
    Date of Patent: April 23, 2002
    Assignee: Reckitt Benckiser France
    Inventors: Christophe Perthuisot, Veronique Mathieu
  • Process for preparing halohydrocarbons
    Patent number: 6369285
    Abstract: Halohydrocarbons containing at least 3 carbon atoms are obtained by reaction between a haloalkane and an olefin in the presence of a catalyst in a reaction medium which is essentially free of water.
    Type: Grant
    Filed: September 29, 2000
    Date of Patent: April 9, 2002
    Assignee: Solvay (Societe Anonyme)
    Inventors: Véronique Mathieu, Charles-Marie Anciaux
  • Hydrogenation catalysts, method for making same and use thereof for preparing hydrogen peroxide
    Patent number: 6306359
    Abstract: Hydrogenation catalysts based on palladium, platinum or rhodium comprising at least one other metal M which are deposited on zirconium oxide and silicon oxide supports. Process for the manufacture of these catalysts by successive impregnation of the support using palladium, platinum or rhodium and using another metal M. Use of these catalysts in hydrogenation reactions and in particular in preparing hydrogen peroxide.
    Type: Grant
    Filed: June 22, 1999
    Date of Patent: October 23, 2001
    Assignee: Solvay Interox (Societe Anon.)
    Inventors: Véronique Mathieu, Pascal Pennetreau, Noel Vanlautem