Patents by Inventor William Albert Matthews

William Albert Matthews 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).

  • Polymer flow index modifier
    Patent number: 11655316
    Abstract: Embodiments of the present disclosure are directed towards method for modifying a polymer flow index. As an example, a method for modifying a polymer flow index can include providing monomers to a polymerization reactor, providing a chromium catalyst to the polymerization reactor, and providing an active amount of a flow index modifier to the polymerization reactor, wherein the flow index modifier is selected from carbon dioxide, carbon monoxide, 2,4-hexadiene, and combinations thereof.
    Type: Grant
    Filed: December 16, 2020
    Date of Patent: May 23, 2023
    Assignee: Univation Technologies, LLC
    Inventors: Charles D. Lester, Mark G. Goode, Timothy R. Lynn, Kevin J. Cann, John H. Moorhouse, William Albert Matthews, Kefu Sun, Francois Alexandre
  • POLYMER FLOW INDEX MODIFIER
    Publication number: 20210102016
    Abstract: Embodiments of the present disclosure are directed towards method for modifying a polymer flow index.
    Type: Application
    Filed: December 16, 2020
    Publication date: April 8, 2021
    Applicant: Univation Technologies, LLC
    Inventors: Charles D. Lester, Mark G. Goode, Timothy R. Lynn, Kevin J. Cann, John H. Moorhouse, William Albert Matthews, Kefu Sun, Francois Alexandre
  • Polymer flow index modifier
    Patent number: 10870719
    Abstract: Embodiments of the present disclosure are directed towards method for modifying a polymer flow index. As an example, a method for modifying a polymer flow index can include providing monomers to a polymerization reactor, providing a chromium catalyst to the polymerization reactor, and providing an active amount of a flow index modifier to the polymerization reactor, wherein the flow index modifier is selected from carbon dioxide, carbon monoxide, 2,4-hexadiene, and combinations thereof.
    Type: Grant
    Filed: April 17, 2017
    Date of Patent: December 22, 2020
    Assignee: Univation Technologies, LLC
    Inventors: Charles D. Lester, Mark G. Goode, Timothy R. Lynn, Kevin J. Cann, John H. Moorhouse, William Albert Matthews, Kefu Sun, Francois Alexandre
  • POLYMER FLOW INDEX MODIFIER
    Publication number: 20190119416
    Abstract: Embodiments of the present disclosure are directed towards method for modifying a polymer flow index. As an example, a method for modifying a polymer flow index can include providing monomers to a polymerization reactor, providing a chromium catalyst to the polymerization reactor, and providing an active amount of a flow index modifier to the polymerization reactor, wherein the flow index modifier is selected from carbon dioxide, carbon monoxide, 2,4-hexadiene, and combinations thereof.
    Type: Application
    Filed: April 17, 2017
    Publication date: April 25, 2019
    Applicant: Univation Technologies, LLC
    Inventors: Charles D. Lester, Mark G. Goode, Timothy R. Lynn, Kevin J. Cann, John H. Moorhouse, William Albert Matthews, Kefu Sun, Francois Alexandre
  • Process control in the presence of chromium based catalysts
    Patent number: 5844054
    Abstract: A continuous process for the polymerization of one or more alpha-olefins in the gas phase in the presence of a chromium based catalyst, under polymerization conditions including the reaction temperature, the pressure, and the target oxygen to alpha-olefin molar ratio operating point required for desired resin properties.
    Type: Grant
    Filed: March 21, 1997
    Date of Patent: December 1, 1998
    Inventors: Paul Kevin Samples, William Albert Matthews, John Roberts Parrish, Ivan Jeremy Hartley, Kiu Hee Lee