Patents by Inventor Kathryn Ann Russell

Kathryn Ann Russell 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).

  • Processes for transitioning between metallocene and Ziegler-Natta polymerization catalysts
    Patent number: 6995217
    Abstract: Processes for transitioning among polymerization catalyst systems, preferably catalyst systems that are incompatible with each other. In particular, the processes relate to transitioning from olefin polymerizations utilizing metallocene catalyst systems to olefin polymerizations utilizing traditional Ziegler-Natta catalyst systems.
    Type: Grant
    Filed: July 28, 2005
    Date of Patent: February 7, 2006
    Assignee: Univation Technologies, LLC
    Inventors: Agapios Kyriacos Agapiou, Robert Olds Hagerty, F. David Hussein, Michael Elroy Muhle, Richard B. Pannell, Kathryn Ann Russell, Robert Lynn Santana, X. Simon Zhang
  • Processes for transitioning between metallocene and Ziegler-Natta polymerization catalysts
    Patent number: 6949612
    Abstract: Processes for transitioning among polymerization catalyst systems, preferably catalyst systems that are incompatible with each other. In particular, the processes relate to transitioning from olefin polymerizations utilizing metallocene catalyst systems to olefin polymerizations utilizing traditional Ziegler-Natta catalyst systems.
    Type: Grant
    Filed: November 18, 2003
    Date of Patent: September 27, 2005
    Assignee: Univation Technologies, LLC
    Inventors: Agapios Kyriacos Agapiou, Robert Olds Hagerty, F. David Hussein, Michael Elroy Muhle, Richard B. Pannell, Kathryn Ann Russell, Robert Lynn Santana, X. Simon Zhang
  • Processes for transitioning between metallocene and ziegler-natta polymerization catalysts
    Publication number: 20040181016
    Abstract: Processes for transitioning among polymerization catalyst systems, preferably catalyst systems that are incompatible with each other. In particular, the processes relate to transitioning from olefin polymerizations utilizing metallocene catalyst systems to olefin polymerizations utilizing traditional Ziegler-Natta catalyst systems.
    Type: Application
    Filed: November 18, 2003
    Publication date: September 16, 2004
    Inventors: Agapios Kyriacos Agapiou, Robert Olds Hagerty, F. David Hussein, Michael Elroy Muhle, Richard B. Pannell, Kathryn Ann Russell, Robert Lynn Santana, X. Simon Zhang
  • Method for making supported catalyst systems and catalyst systems therefrom
    Patent number: 5721184
    Abstract: Catalyst systems and methods for supporting catalysts and their components, particularly metallocene catalyst components, are provided. The method involves techniques for evenly distributing a small volume of catalyst component over and among a porous support material. Such even distribution is thought to result in reduced fouling.
    Type: Grant
    Filed: August 27, 1996
    Date of Patent: February 24, 1998
    Assignees: Hoechst, Exxon Chemical Patents Inc.
    Inventors: Jeffrey Lawrence Brinen, Anthony Nicholas Speca, Kelly Tormaschy, Kathryn Ann Russell
  • Method for making supported catalyst systems and catalyst systems therefrom
    Patent number: 5665665
    Abstract: Catalyst systems and methods for supporting catalysts and their components, particularly metallocene catalyst components, are provided. The method involves teqhniques for evenly distributing a small volume of catalyst component over and among a porous support material. Such even distribution is thought to result in reduced fouling.
    Type: Grant
    Filed: November 17, 1995
    Date of Patent: September 9, 1997
    Assignees: Exxon Chemical Patents, Inc., Hoechst
    Inventors: Jeffrey Lawrence Brinen, Anthony Nicholas Speca, Kelly Tormaschy, Kathryn Ann Russell