Patents by Inventor Terry John Burkhardt

Terry John Burkhardt 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).

  • Patent number: 7494626
    Abstract: A polymerization process is provided. For example, a polymerization process is described, including providing a catalyst slurry having a metallocene catalyst and a first oil, providing a transport medium including a second oil and combining the transport medium and the catalyst slurry to form a catalyst mixture. The process may further include introducing the catalyst mixture to a polymerization reactor and contacting olefin monomers with the catalyst mixture to polymerize the olefin monomers and form polyolefins.
    Type: Grant
    Filed: July 18, 2006
    Date of Patent: February 24, 2009
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventors: Lawrence Carl Smith, James Charles Vizzini, Ted Alexander Powell, Terry John Burkhardt, Anthony Nicholas Speca, Shiaw Tzuu Ju
  • Patent number: 7456021
    Abstract: Disclosed herein is a method for determining the presence of an activated catalyst site in a catalyst system comprising a catalyst precursor and an activator, wherein the catalyst system is capable of providing a luminescence, the method comprising: performing a time resolved luminescence analysis on a reference analyte comprising the catalyst precursor that is not in combination with the activator, and performing a time resolved luminescence analysis on a sample analyte comprising the catalyst precursor in combination with the activator, determining a reference emission energy and a reference lifetime each associated with a maximum emission intensity in the reference output values; determining a sample emission energy and a sample lifetime each associated with a maximum emission intensity in the sample output values; and comparing the values to determine if the sample comprises an activated catalyst site. Use of the above method in relation to an activation index is also disclosed.
    Type: Grant
    Filed: January 16, 2004
    Date of Patent: November 25, 2008
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventors: Patrick Brant, Burkhard Endeward, Hans Thomann, Yuan-Ju Chen, Terry John Burkhardt
  • Patent number: 7232868
    Abstract: A polymerization process is provided. For example, a polymerization process is described, including providing a catalyst slurry having a metallocene catalyst and a first oil, providing a transport medium including a second oil and combining the transport medium and the catalyst slurry to form a catalyst mixture. The process may further include introducing the catalyst mixture to a polymerization reactor and contacting olefin monomers with the catalyst mixture to polymerize the olefin monomers and form polyolefins.
    Type: Grant
    Filed: September 22, 2003
    Date of Patent: June 19, 2007
    Assignee: Exxon/Mobil Chemical Patents Inc.
    Inventors: Lawrence Carl Smith, James Charles Vizzini, Ted Alexander Powell, Terry John Burkhardt, Anthony Nicholas Speca, Shiaw Tzuu Ju
  • Patent number: 7157591
    Abstract: Metallocenes and catalyst systems for olefin polymerization derived therefrom. The metallocenes may be represented by the formula: wherein M1 preferably is zirconium or hafnium; and R5 is different from hydrogen.
    Type: Grant
    Filed: December 10, 2001
    Date of Patent: January 2, 2007
    Assignee: ExxonMobie Chemical Patents Inc.
    Inventors: Terry John Burkhardt, James Robert Hart, William Thomas Haygood, Robert Tan Li
  • Patent number: 6825372
    Abstract: This invention relates to metallocene compositions and their use in the preparation of catalyst systems for olefin polymerization, particularly propylene polymerization. The metallocene compositions may be represented by the formula: wherein R9 and R11 are identical or different and are a Group 14 radical having from 1 to 20 carbon atoms or are each primary, secondary or tertiary butyl groups, aryl groups, isopropyl groups, fluoroalkyl groups, trialkyl silyl groups, or other groups of similar size.
    Type: Grant
    Filed: January 31, 2002
    Date of Patent: November 30, 2004
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventors: Terry John Burkhardt, William T. Haygood, Jr., Robert Tan Li, James Charles Vizzini, Matthew Cornyn Kuchta, Udo M. Stehling, James R. Hart
  • Publication number: 20040097667
    Abstract: A polymerization process is provided. For example, a polymerization process is described, including providing a catalyst slurry having a metallocene catalyst and a first oil, providing a transport medium including a second oil and combining the transport medium and the catalyst slurry to form a catalyst mixture. The process may further include introducing the catalyst mixture to a polymerization reactor and contacting olefin monomers with the catalyst mixture to polymerize the olefin monomers and form polyolefins.
    Type: Application
    Filed: September 22, 2003
    Publication date: May 20, 2004
    Inventors: Lawrence Carl Smith, James Charles Vizzini, Ted Alexander Powell, Terry John Burkhardt, Anthony Nicholas Speca, Shiaw Tzuu Ju
  • Patent number: 6492465
    Abstract: This invention relates to propylene impact copolymer compositions. In particular, these unique and improved compositions can be produced using conventional, commercial-scale processes.
    Type: Grant
    Filed: March 24, 2000
    Date of Patent: December 10, 2002
    Assignee: ExxonMobil Chemical Patents, Inc.
    Inventors: Terry John Burkhardt, Robert Tan Li, Aspy Keki Mehta, Udo M. Stehling, William T. Haygood, Jr., Francis C. Rix, Dawn C. Wiser
  • Publication number: 20020165084
    Abstract: This invention relates to metallocene compositions and their use in the preparation of catalyst systems for olefin polymerization, particularly propylene polymerization.
    Type: Application
    Filed: January 31, 2002
    Publication date: November 7, 2002
    Inventors: Terry John Burkhardt, William T. Haygood, Robert Tan Li, James Charles Vizzini, Matthew Cornyn Kuchta, Udo M. Stehling, James R. Hart
  • Patent number: 6472474
    Abstract: This invention relates to propylene impact copolymer compositions. In particular, these unique and improved compositions can be produced using conventional, commercial-scale processes.
    Type: Grant
    Filed: November 27, 2001
    Date of Patent: October 29, 2002
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventors: Terry John Burkhardt, Robert Tan Li, Aspy Keki Mehta, Udo M. Stehling, William T. Haygood, Jr., Francis C. Rix, Dawn C. Wiser
  • Publication number: 20020086947
    Abstract: This invention relates to propylene impact copolymer compositions. In particular, these unique and improved compositions can be produced using conventional, commercial-scale processes.
    Type: Application
    Filed: November 27, 2001
    Publication date: July 4, 2002
    Inventors: Terry John Burkhardt, Robert Tan Li, Aspy Keki Mehta, Udo M. Stehling, William T. Haygood, Francis C. Rix, Dawn C. Wiser
  • Patent number: 6414095
    Abstract: This invention relates to metallocene compositions and their use in the preparation of catalyst systems for olefin polymerization, particularly propylene polymerization The metallocene compositions may be represented by the formula: wherein M1 is selected from the group consisting of titanium, zirconium, hafnium, vanadium, niobium, tantalum, chromium, molybdenum and tungsten; R1 and R2 are identical or different, and are one of a hydrogen atom, a C1-C10 alkyl group, a C1-C10 alkoxy group, a C6-C10 aryl group, a C6-C10 aryloxy group, a C2-C40 alkenyl group, a C7-C40 arylalkyl group, a C7-C40 alkylaryl group, a C8-C40 arylalkenyl group, an OH group or a halogen atom or a conjugated diene which is optionally substituted with one or more hydrocarbyl, tri(hydrocarbyl)silyl groups or tri(hydrocarbyl)silylhydrocarbyl groups, said diene having up to 30 atoms not counting hydrogen; R3 are identical or different and are each a hydrogen atom, a halogen atom, a C1-C10 alkyl group which may be halogena
    Type: Grant
    Filed: July 19, 2000
    Date of Patent: July 2, 2002
    Assignee: Exxon Mobil Chemical Patents Inc.
    Inventors: Terry John Burkhardt, William T. Haygood, Jr., Robert Tan Li, James Charles Vizzini, Matthew Cornyn Kuchta, Udo M. Stehling, James R. Hart
  • Patent number: 6399723
    Abstract: This invention relates to metallocene compositions and their use in the preparation of catalyst systems for olefin polymerization, particularly propylene polymerization.
    Type: Grant
    Filed: July 19, 2000
    Date of Patent: June 4, 2002
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventors: Terry John Burkhardt, William T. Haygood, Jr., Robert Tan Li, James Charles Vizzini, Matthew Cornyn Kuchta, Udo M. Stehling, James R. Hart
  • Patent number: 6384142
    Abstract: This invention relates to propylene impact copolymer compositions. In particular, these unique and improved compositions can be produced using conventional, commercial-scale processes.
    Type: Grant
    Filed: March 24, 2000
    Date of Patent: May 7, 2002
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventors: Terry John Burkhardt, Robert Tan Li, Aspy Keki Mehta, Udo M. Stehling, William T. Haygood, Jr., Francis C. Rix, Dawn C. Wiser
  • Patent number: 6380120
    Abstract: This invention relates to metallocene compositions and their use in the preparation of catalyst systems for olefin polymerization, particularly propylene polymerization.
    Type: Grant
    Filed: July 19, 2000
    Date of Patent: April 30, 2002
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventors: Terry John Burkhardt, William T. Haygood, Jr., Udo M. Stehling, James R. Hart, Robert Tan Li, James Charles Vizzini, Matthew Cornyn Kuchta
  • Patent number: 6380124
    Abstract: This invention relates to metallocene compositions and their use in the preparation of catalyst systems for olefin polymerization, particularly propylene polymerization.
    Type: Grant
    Filed: July 19, 2000
    Date of Patent: April 30, 2002
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventors: Terry John Burkhardt, William T. Haygood, Jr., Robert Tan Li, James Charles Vizzini, Matthew Cornyn Kuchta, Udo M. Stehling, James R. Hart
  • Patent number: 6380330
    Abstract: This invention relates to metallocene compositions and their use in the preparation of catalyst systems for olefin polymerization, particularly propylene polymerization.
    Type: Grant
    Filed: July 19, 2000
    Date of Patent: April 30, 2002
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventors: Terry John Burkhardt, William T. Haygood, Jr., Robert Tan Li, James Charles Vizzini, Matthew Cornyn Kuchta, Udo M. Stehling, James R. Hart
  • Patent number: 6376411
    Abstract: This invention relates to metallocene compositions and their use in the preparation of catalyst systems for olefin polymerization, particularly propylene polymerization.
    Type: Grant
    Filed: July 19, 2000
    Date of Patent: April 23, 2002
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventors: Terry John Burkhardt, William T. Haygood, Jr., Robert Tan Li, James Charles Vizzini, Matthew Cornyn Kuchta, Udo M. Stehling, James R. Hart
  • Patent number: 6376412
    Abstract: This invention relates to metallocene compositions and their use in the preparation of catalyst systems for olefin polymerization, particularly propylene polymerization.
    Type: Grant
    Filed: July 19, 2000
    Date of Patent: April 23, 2002
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventors: Terry John Burkhardt, William T. Haygood, Jr., Robert Tan Li, James Charles Vizzini, Matthew Cornyn Kuchta, Udo M. Stehling, James R. Hart
  • Patent number: 6376409
    Abstract: This invention relates to metallocene compositions and their use in the preparation of catalyst systems for olefin polymerization, particularly propylene polymerization.
    Type: Grant
    Filed: July 19, 2000
    Date of Patent: April 23, 2002
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventors: Terry John Burkhardt, William T. Haygood, Jr., Robert Tan Li, James Charles Vizzini, Matthew Cornyn Kuchta, Udo M. Stehling, James R. Hart
  • Patent number: 6376407
    Abstract: This invention relates to metallocene compositions and their use in the preparation of catalyst systems for olefin polymerization, particularly propylene polymerization.
    Type: Grant
    Filed: July 19, 2000
    Date of Patent: April 23, 2002
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventors: Terry John Burkhardt, William T. Haygood, Jr., Robert Tan Li, James Charles Vizzini, Matthew Cornyn Kuchta, Udo M. Stehling, James R. Hart