Patents by Inventor Severine Guibert

Severine Guibert 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).

  • Catalyst compound for the metathesis of olefins
    Patent number: 6908878
    Abstract: An improved catalyst composition for the metathesis of olefins comprises at least one porous mineral carrier based on alumina, at least one compound of rhenium, molybdenum, or tungsten, and further includes silicon in an oxide form.
    Type: Grant
    Filed: July 5, 2002
    Date of Patent: June 21, 2005
    Assignee: Institut Francais du Petrole
    Inventors: Patrick Euzen, Séverine Guibert, Virginie Kruger-Tissot, Georges Vidouta
  • Catalytic composition and process for oligomerizing ethylene, in particular to 1-hexene
    Patent number: 6903042
    Abstract: A catalytic composition for oligomerizing ethylene, in particular to 1-hexene, is obtained by mixing at least one chromium carboxylate characterized in that it also contains a free carboxylic acid in a set proportion, with at least one aryloxy compound of an element M selected from the group formed by magnesium, calcium, strontium and barium, with general formula M(RO)2-nXn in which RO is an aryloxy radical containing 6 to 80 carbon atoms, X is a halogen atom or a hydrocarbyl radical containing 1 to 30 carbon atoms and n is a whole number that can take the values 0 or 1, and with at least one hydrocarbylaluminum compound selected from the group formed by tris(hydrocarbyl)-aluminum compounds, chlorinated or brominated hydrocarbylaluminum compounds and aluminoxanes.
    Type: Grant
    Filed: December 4, 2002
    Date of Patent: June 7, 2005
    Assignee: Institut Francais du Petrole
    Inventors: Sébastien Drochon, Séverine Guibert, Lucien Saussine
  • Catalytic composition and process for oligomerizing ethylene, in particular to1-hexene
    Publication number: 20030130551
    Abstract: A catalytic composition for oligomerizing ethylene, in particular to 1-hexene, is obtained by mixing at least one chromium carboxylate characterized in that it also contains a free carboxylic acid in a set proportion, with at least one aryloxy compound of an element M selected from the group formed by magnesium, calcium, strontium and barium, with general formula M(RO)2-nXn in which RO is an aryloxy radical containing 6 to 80 carbon atoms, X is a halogen atom or a hydrocarbyl radical containing 1 to 30 carbon atoms and n is a whole number that can take the values 0 or 1, and with at least one hydrocarbylaluminum compound selected from the group formed by tris(hydrocarbyl)-aluminum compounds, chlorinated or brominated hydrocarbylaluminum compounds and aluminoxanes.
    Type: Application
    Filed: December 4, 2002
    Publication date: July 10, 2003
    Applicant: Institut Francais du Petrole
    Inventors: Sebastien Drochon, Severine Guibert, Lucien Saussine
  • Catalyst compound for the metathesis of olefins
    Publication number: 20030023125
    Abstract: An improved catalyst composition for the metathesis of olefins comprises at least one porous mineral carrier based on alumina, at least one compound of rhenium, molybdenum, or tungsten, and further includes silicon in an oxide form.
    Type: Application
    Filed: July 5, 2002
    Publication date: January 30, 2003
    Applicant: Institut Francais du Petrole
    Inventors: Patrick Euzen, Severine Guibert, Virginie Kruger-Tissot, Georges Vidouta
  • Process for regenerating a metathesis catalyst
    Publication number: 20030008766
    Abstract: An improved process for regenerating metathesis catalysts that comprise a compound of rhenium, molybdenum or tungsten on a porous substrate that consists of a refractory oxide and that has an acidic, neutral or basic nature, and an organometallic promoter that consists of an alkyl complex of tin or lead is described. The regeneration comprises a selective extraction of the organometallic promoter followed by a calcination and a reimpregnation by the same promoter.
    Type: Application
    Filed: May 6, 2002
    Publication date: January 9, 2003
    Applicant: Institut Francais du Petrole
    Inventors: Virginie Kruger-Tissot, Severine Guibert, Dominique Commereuc