Patents by Inventor Francoise Di Marco-Van Tiggelen

Francoise Di Marco-Van Tiggelen 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 composition and olefin disproportion process
    Patent number: 5675051
    Abstract: The invention concerns a catalytic olefin disproportion (also known as metathesis) process wherein the catalyst produced by dissolving a tungsten and/or molybdenum compound, more particularly a tungsten and/or molybdenum halide substituted with one or more phenoxo groups containing at least two hydrocarbon substituents in the ortho, ortho' positions, in a medium produced by mixing at least one quaternary ammonium halide and/or at least one quaternary phosphonium halide, at least one aluminium halide, and an organometallic aluminium compound.
    Type: Grant
    Filed: November 1, 1995
    Date of Patent: October 7, 1997
    Assignee: Institut Francais Du Petrole
    Inventors: Yves Chauvin, Francoise Di Marco-Van Tiggelen
  • Catalytic composition and olefin disproportion process
    Patent number: 5525567
    Abstract: The invention concerns a catalytic composition for olefin disproportion (also known as metathesis) produced by dissolving a tungsten and/or molybdenum compound, more particularly a tungsten and/or molybdenum halide substituted with one or more phenoxo groups containing at least two hydrocarbon substituents in the ortho, ortho' positions, in a medium produced by mixing at least one quaternary ammonium halide and/or at least one quaternary phosphonium halide, at least one aluminum halide, and an organometallic aluminum compound.The invention also concerns an olefin disproportion process using this composition.
    Type: Grant
    Filed: January 25, 1995
    Date of Patent: June 11, 1996
    Assignee: Institut Francais du Petrole
    Inventors: Yves Chauvin, Francoise Di Marco-Van Tiggelen