Patents by Inventor Cynthia A. Hepburn

Cynthia A. Hepburn 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).

  • Ziegler-Natta type catalysts, methods of preparing same, polymers produced using the catalysts and articles produced therefrom
    Patent number: 9221932
    Abstract: A method for making a support impregnated Ziegler-Natta-type catalyst precursor including at least two transition metals and a support material wherein the resulting catalyst precursor is free-flowing is provided. Also provided is a process for producing a Ziegler-Natta type procatalyst by halogenating the free flowing catalyst precursor. The Ziegler-Natta type procatalyst and the reaction product of at least one monomer in the presence of the Ziegler-Natta type procatalyst and cocatalyst are also provided.
    Type: Grant
    Filed: August 31, 2010
    Date of Patent: December 29, 2015
    Assignee: Union Carbide Chemicals & Plastics Technology LLC
    Inventors: Robert J. Jorgensen, Burkhard E. Wagner, Cynthia A. Hepburn
  • ZIEGLER-NATTA TYPE CATALYSTS, METHODS OF PREPARING SAME, POLYMERS PRODUCED USING THE CATALYSTS AND ARTICLES PRODUCED THEREFROM
    Publication number: 20120053312
    Abstract: A method for making a support impregnated Ziegler-Natta-type catalyst precursor including at least two transition metals and a support material wherein the resulting catalyst precursor is free-flowing is provided. Also provided is a process for producing a Ziegler-Natta type procatalyst by halogenating the free flowing catalyst precursor. The Ziegler-Natta type procatalyst and the reaction product of at least one monomer in the presence of the Ziegler-Natta type procatalyst and cocatalyst are also provided.
    Type: Application
    Filed: August 31, 2010
    Publication date: March 1, 2012
    Applicant: Union Carbide Chemicals & Plastics Technology LLC
    Inventors: Robert J. Jorgensen, Burkhard E. Wagner, Cynthia A. Hepburn