Patents by Inventor Sandra Dorothy Holyfield

Sandra Dorothy Holyfield 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).

  • Polymerization process and associated apparatus
    Patent number: 8088334
    Abstract: There are disclosed polymerization processes and associated apparatuses. The polymerization processes involve both making a polymeric material in a fluidized bed reactor having a feed distributor and catching a spitwad with a spitwad catcher, and the apparatuses are those corresponding to such processes.
    Type: Grant
    Filed: October 13, 2011
    Date of Patent: January 3, 2012
    Assignee: Westlake Longview Corp.
    Inventors: Kenneth Alan Dooley, Don Kent Farrer, Sandra Dorothy Holyfield, Tommy Ray Maddox, II, Glenn Edward Moore, Larry Allen Noble
  • Polymerization process and associated apparatus
    Patent number: 8063158
    Abstract: There are disclosed polymerization processes and associated apparatuses. The polymerization processes involve both making a polymeric material in a fluidized bed reactor having a feed distributor and catching a spitwad with a spitwad catcher, and the apparatuses are those corresponding to such processes.
    Type: Grant
    Filed: August 6, 2004
    Date of Patent: November 22, 2011
    Assignee: Westlake Longview Corp.
    Inventors: Kenneth Alan Dooley, Don Kent Farrer, Sandra Dorothy Holyfield, Tommy Ray Maddox, II, Glenn Edward Moore, Larry Allen Noble
  • Method for preventing or inhibiting fouling in a gas-phase polyolefin polymerization process
    Patent number: 7253239
    Abstract: A method for preventing or inhibiting fouling in a gas-phase polyolefin polymerization process. The method includes maintaining the inside surface temperature of the process equipment below the dew point temperature of the gas mixture passing through the equipment.
    Type: Grant
    Filed: October 13, 2005
    Date of Patent: August 7, 2007
    Assignee: Westlake Longview Corporation
    Inventors: Kenneth Alan Dooley, Don Kent Farrer, Sandra Dorothy Holyfield, Glenn Edward Moore, Larry Allen Noble