Patents by Inventor Fredy Speiser

Fredy Speiser 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).

  • Organometallic complexes that comprise bidentate chelating ligands that combine a nitrogen-containing heterocyclic compound with an alcohol and their use for catalyzing the oligomerization of olefins
    Patent number: 7199075
    Abstract: A catalyst for the oligomerization of olefins, especially ethylene contains: at least one nickel complex e.g. Li2 Ni X2 that results from bringing into contact a nickel salt e.g. a nickel carboxylate with a bidentate chelating ligand containing a nitrogen-containing heterocyclic compound with an alcohol e.g. Ha-C(OH)RR?; and at least one hydrocarbylaluminum compound from tris(hydrocarbyl)aluminum compounds, chlorinated or brominated hydrocarbylaluminum compounds or at least one aluminoxane.
    Type: Grant
    Filed: May 28, 2003
    Date of Patent: April 3, 2007
    Assignee: Institut Francais du Petrole
    Inventors: Fredy Speiser, Pierre Braunstein, Lucien Saussine
  • Organometallic complexes comprising phosphonite ligands, and their use in catalyzing olefin oligomerization
    Patent number: 6864209
    Abstract: A catalytic composition for oligomerizing olefins, in particular ethylene, comprises mixing at least one nickel complex, prepared by reacting a nickel salt with a phosphonite ligapd, with at least one hydrocarbylaluminum compound in a molar proportion with respect to the nickel of not more than 8? and selected from the group formed by tris(hydrocarbyl)aluminum compounds, chlorinated or brominated hydrocarbylaluminum compounds and aluminoxanes.
    Type: Grant
    Filed: March 31, 2003
    Date of Patent: March 8, 2005
    Assignee: Institut Francais du Petrole
    Inventors: Fredy Speiser, Pierre Braunstein, Lucien Saussine
  • Organometallic complexes comprising phosphonite ligands, and their use in catalyzing olefin oligomerization
    Publication number: 20030216251
    Abstract: A catalytic composition for oligomerizing olefins, in particular ethylene, comprises mixing at least one nickel complex, prepared by reacting a nickel salt with a phosphonite ligand, with at least one hydrocarbylaluminum compound in a small proportion with respect to the nickel and selected from the group formed by tris(hydrocarbyl)aluminum compounds, chlorinated or brominated hydrocarbylaluminum compounds and aluminoxanes.
    Type: Application
    Filed: March 31, 2003
    Publication date: November 20, 2003
    Applicant: Institut Francais du Petrole
    Inventors: Fredy Speiser, Pierre Braunstein, Lucien Saussine