Patents by Inventor Cristophe Boisson

Cristophe Boisson 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).

  • Catalytic system, its method for preparation and method for preparation of a copolymer of ethylene and a conjugated diene
    Patent number: 6800705
    Abstract: The present invention provides to a catalytic system, its method for preparation, and a method for preparation of a copolymer of ethylene and a conjugated diene, which uses this catalytic system. A catalytic system according to the invention comprises: an organometallic complex compound, which is represented by one formula A or B: in which Ln represents a metal of a lanthanide, the atomic number of which is between 57 and 71; X represents a halogen, which can be chlorine, fluorine, bromine or iodine; and Cp1 and Cp2 each comprise a cyclopentadienyl or fluorenyl group, which is or is not substituted, and P is a bridge corresponding to the formula MR2, in which M is an element of column IVA of Mendeleev's periodic classification, and R is an alkyl group comprising from 1 to 20 atoms of carbon; and a co-catalyst selected from among a magnesium alkyl, a lithium alkyl, an aluminium alkyl, or a Grignard's reagent, and mixtures thereof.
    Type: Grant
    Filed: May 23, 2002
    Date of Patent: October 5, 2004
    Assignee: Michelin Recherche et Technique S.A.
    Inventors: Fanny Barbotin, Cristophe Boisson, Roger Spitz
  • Catalytic system, its method for preparation, and method for preparation of a copolymer of ethylene and a conjugated diene
    Patent number: 6569799
    Abstract: The present invention provides to a catalytic system, its method for preparation, and a method for preparation of a copolymer of ethylene and a conjugated diene, which uses this catalytic system. A catalytic system according to the invention comprises: an organometallic complex compound, which is represented by one formula A or B:  in which Ln represents a metal of a lanthanide, the atomic number of which is between 57 and 71; X represents a halogen, which can be chlorine, fluorine, bromine or iodine; and Cp1 and Cp2 each comprise a cyclopentadienyl or fluorenyl group, which is or is not substituted, and P is a bridge corresponding to the formula MR2, in which M is an element of column IVA of Mendeleev's periodic classification, and R is an alkyl group comprising from 1 to 20 atoms of carbon; and a co-catalyst selected from among a magnesium alkyl, a lithium alkyl, an aluminium alkyl, or a Grignard's reagent, and mixtures thereof.
    Type: Grant
    Filed: October 12, 2000
    Date of Patent: May 27, 2003
    Assignee: Michelin Recherche et Technique S.A.
    Inventors: Fanny Barbotin, Cristophe Boisson, Roger Spitz
  • Catalytic system, its method for preparation, and method for preparation of a copolymer of ethylene and a conjugated diene
    Publication number: 20030004287
    Abstract: The present invention provides to a catalytic system, its method for preparation, and a method for preparation of a copolymer of ethylene and a conjugated diene, which uses this catalytic system.
    Type: Application
    Filed: May 23, 2002
    Publication date: January 2, 2003
    Inventors: Fanny Barbotin, Cristophe Boisson, Roger Spitz