Patents by Inventor A. Willem Degroot

A. Willem Degroot 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).

  • Reinforced polypropylene composition
    Patent number: 10208193
    Abstract: Embodiments of the invention provide a reinforced polypropylene comprising a multi-modal molecular weight distribution elastomer and a block composite.
    Type: Grant
    Filed: June 24, 2013
    Date of Patent: February 19, 2019
    Assignee: Dow Global Technologies LLC
    Inventors: Yi Jin, Kim L. Walton, Edmund M. Carnahan, Gary R. Marchand, Xuming Chen, Jeffrey D. Weinhold, Jerzy Klosin, A. Willem Degroot, Philip P. Fontaine
  • REINFORCED POLYPROPYLENE COMPOSITION
    Publication number: 20160251505
    Abstract: Embodiments of the invention provide a reinforced polypropylene comprising a multi-modal molecular weight distribution elastomer and a block composite.
    Type: Application
    Filed: June 24, 2013
    Publication date: September 1, 2016
    Applicant: Dow Global Technologies LLC
    Inventors: Yi Jin, Kim L. Walton, Edmund M. Carnahan, Gary R. Marchand, Xuming Chen, Jeffrey D. Weinhold, Jerzy Klosin, A. Willem Degroot, Philip P. Fontaine
  • Chromatography of polyolefin polymers
    Patent number: 8476076
    Abstract: A method and apparatus for chromatography of a polyolefin polymer by flowing a solution of the polyolefin polymer through liquid flowing through a graphitic carbon liquid chromatography stationary phase. The method can be used to determine the monomer to comonomer ratio of a polyolefin copolymer such as a copolymer of ethylene and 1-octene or a copolymer of propylene and ethylene.
    Type: Grant
    Filed: November 4, 2011
    Date of Patent: July 2, 2013
    Assignee: Dow Global Technologies LLC
    Inventors: Freddy A. Van Damme, John W. Lyons, William L. Winniford, Alexander Willem deGroot, Matthew D. Miller
  • CHROMATOGRAPHY OF POLYOLEFIN POLYMERS
    Publication number: 20120047990
    Abstract: A method and apparatus for chromatography of a polyolefin polymer by flowing a solution of the polyolefin polymer through liquid flowing through a graphitic carbon liquid chromatography stationary phase. The method can be used to determine the monomer to comonomer ratio of a polyolefin copolymer such as a copolymer of ethylene and 1-octene or a copolymer of propylene and ethylene.
    Type: Application
    Filed: November 4, 2011
    Publication date: March 1, 2012
    Applicant: Dow Global Technologies LLC
    Inventors: Freddy A. Van Damme, John W. Lyons, William L. Winniford, Alexander Willem deGroot, Matthew D. Miller
  • CHROMOTOGRAPHY OF POLYOLEFIN POLYMERS
    Publication number: 20100093964
    Abstract: A method and apparatus for chromatography of a polyolefin polymer by flowing a solution of the polyolefin polymer through liquid flowing through a graphitic carbon liquid chromatography stationary phase. The method can be used to determine the monomer to comonomer ratio of a polyolefin copolymer such as a copolymer of ethylene and 1-octene or a copolymer of propylene and ethylene.
    Type: Application
    Filed: October 2, 2009
    Publication date: April 15, 2010
    Inventors: Freddy A. Van Damme, John W. Lyons, William L. Winniford, Alexander Willem deGroot, Matthew D. Miller