Patents by Inventor Margaret K. Leclerc

Margaret K. Leclerc 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).

  • Bridged bi-aromatic ligands, catalysts, processes for polymerizing and polymers therefrom
    Patent number: 7126031
    Abstract: New ligands and compositions with bridged bis-aromatic ligands are disclosed that catalyze the polymerization of monomers into polymers. These catalysts with metal centers have high performance characteristics, including higher comonomer incorporation into ethylene/olefin copolymers, where such olefins are for example, 1-octene, propylene or styrene. The catalysts also polymerize propylene into isotactic polypropylene.
    Type: Grant
    Filed: September 30, 2004
    Date of Patent: October 24, 2006
    Assignee: Symyx Technologies, Inc.
    Inventors: Thomas R. Boussie, Oliver Brümmer, Gary M. Diamond, Christopher Goh, Anne M. LaPointe, Margaret K. Leclerc, James A. W. Shoemaker
  • Bridged bi-aromatic ligands, catalysts, processes for polymerizing and polymers therefrom
    Patent number: 6869904
    Abstract: New ligands, compositions, metal-ligand complexes and arrays with bridged bis-aromatic ligands are disclosed that catalyze the polymerization of monomers into polymers. These catalysts with metal centers have high performance characteristics, including higher comonomer incorporation into ethylene/olefin copolymers, where such olefins are for example, 1-octene, propylene or styrene. The catalysts also polymerize propylene into isotactic polypropylene.
    Type: Grant
    Filed: April 23, 2003
    Date of Patent: March 22, 2005
    Assignee: Symyx Technologies, Inc.
    Inventors: Thomas R. Boussie, Gary M. Diamond, Christopher Goh, Anne M. LaPointe, Margaret K. Leclerc, James A. W. Shoemaker
  • Bridged bi-aromatic ligands, catalysts, processes for polymerizing and polymers therefrom
    Publication number: 20040014950
    Abstract: New ligands and compositions with bridged bis-aromatic ligands are disclosed that catalyze the polymerization of monomers into polymers. These catalysts with metal centers have high performance characteristics, including higher comonomer incorporation into ethylene/olefin copolymers, where such olefins are for example, 1-octene, propylene or styrene. The catalysts also polymerize propylene into isotactic polypropylene.
    Type: Application
    Filed: April 23, 2003
    Publication date: January 22, 2004
    Applicant: Symyx Technologies, Inc.
    Inventors: Thomas R. Boussie, Oliver Brummer, Gary M. Diamond, Christopher Goh, Anne M. LaPointe, Margaret K. Leclerc, James A. W. Shoemaker
  • Bridged bi-aromatic ligands, catalysts, processes for polymerizing and polymers therefrom
    Publication number: 20040005984
    Abstract: New ligands, compositions, metal-ligand complexes and arrays with bridged bis-aromatic ligands are disclosed that catalyze the polymerization of monomers into polymers. These catalysts with metal centers have high performance characteristics, including higher comonomer incorporation into ethylene/olefin copolymers, where such olefins are for example, 1-octene, propylene or styrene. The catalysts also polymerize propylene into isotactic polypropylene.
    Type: Application
    Filed: April 23, 2003
    Publication date: January 8, 2004
    Applicant: Symyx Technologies, Inc.
    Inventors: Thomas R. Boussie, Gary M. Diamond, Christopher Goh, Anne M. LaPointe, Margaret K. Leclerc, James A.W. Shoemaker