Patents by Inventor David A. Lockman

David A. Lockman 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).

  • Multiple component feed methods and systems
    Patent number: 8992840
    Abstract: Multiple components are selected, conveyed, and measured in a polymerization system. A control system adjusts the system variables to the desired values. Portions of the components can be fed to a pre-contactor before introduction into the polymerization reactor. The catalyst component concentrations and residence times are tightly controlled in the pre-contactor to affect product properties. The pre-contactor can be a single or multiple combinations of a CSTR or plug flow pre-contactors.
    Type: Grant
    Filed: September 8, 2009
    Date of Patent: March 31, 2015
    Assignee: Chevron Phillips Chemical Company LP
    Inventors: David H. Burns, Donald W. Verser, Elizabeth A. Benham, Max P. McDaniel, John D. Hottovy, Clay K Thurman, David A. Lockman, John O. Lawmaster, Matthew T. Haberly, Thomas H. Smith, Jerry T. Lanier, Matthew G. Thorn, Penny A. Zellers
  • Multiple component feed methods and systems
    Publication number: 20090326168
    Abstract: Multiple components are selected, conveyed, and measured in a polymerization system. A control system adjusts the system variables to the desired values. Portions of the components can be fed to a pre-contactor before introduction into the polymerization reactor. The catalyst component concentrations and residence times are tightly controlled in the pre-contactor to affect product properties. The pre-contactor can be a single or multiple combinations of a CSTR or plug flow pre-contactors.
    Type: Application
    Filed: September 8, 2009
    Publication date: December 31, 2009
    Applicant: Chevron Phillips Chemical Company LP
    Inventors: David H. Burns, Donald W. Verser, Elizabeth A. Benham, Max P. McDaniel, John D. Hottovy, Dale A. Zellers, Penny A. Zeller, Clay K. Thurman, David A. Lockman, John O. Lawmaster, Matthew T. Haberly, Thomas H. Smith, Jerry T. Lanier, Matthew G. Thorn
  • Multiple component feed methods and systems
    Patent number: 7615596
    Abstract: Multiple components are selected, conveyed, and measured in a polymerization system. A control system adjusts the system variables to the desired values. Portions of the components can be fed to a pre-contactor before introduction into the polymerization reactor. The catalyst component concentrations and residence times are tightly controlled in the pre-contactor to affect product properties. The pre-contactor can be a single or multiple combinations of a CSTR or plug flow pre-contactors.
    Type: Grant
    Filed: September 30, 2005
    Date of Patent: November 10, 2009
    Assignee: Chevron Phillips Chemical Company LP
    Inventors: David H. Burns, Donald W. Verser, Elizabeth A. Benham, Max P. McDaniel, John D. Hottovy, Dale A. Zellers, Penny A. Zellers, legal representative, Clay K Thurman, David A. Lockman, John O. Lawmaster, Matthew T. Haberly, Thomas H. Smith, Jerry T. Lanier, Matthew G. Thorn
  • Multiple component feed methods and systems
    Publication number: 20070078238
    Abstract: Multiple components are selected, conveyed, and measured in a polymerization system. A control system adjusts the system variables to the desired values. Portions of the components can be fed to a pre-contactor before introduction into the polymerization reactor. The catalyst component concentrations and residence times are tightly controlled in the pre-contactor to affect product properties. The pre-contactor can be a single or multiple combinations of a CSTR or plug flow pre-contactors.
    Type: Application
    Filed: September 30, 2005
    Publication date: April 5, 2007
    Inventors: David Burns, Donald Verser, Elizabeth Benham, Max McDaniel, John Hottovy, Dale Zellers, Penny Zellers, Clay Thurman, David Lockman, John Lawmaster, Matthew Haberly, Thomas Smith, Jerry Lanier, Matthew Thorn