Patents by Inventor Robert Thomas Johnston

Robert Thomas Johnston 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).

  • Thermoplastic vulcanizates and process to prepare them
    Patent number: 7737205
    Abstract: Highly oil-filled ethylene/alpha-olefin/diene (EAODM) polymers in a free flowing powder or pellet form, processes for preparing these polymers, and the use of these polymers to prepare thermoplastic vulcanizates (TPV) are provided. Thermoplastic vulcanizate premixes can be prepared with the EAODM polymers and thermoplastic polymers, the premixes being easily converted into TPVs.
    Type: Grant
    Filed: July 27, 2004
    Date of Patent: June 15, 2010
    Inventors: Susan Grace James, Robert Thomas Johnston
  • Thermoplastic vulcanizates and process to prepare them
    Patent number: 7521501
    Abstract: Highly oil-filled ethylene/alpha-olefin/diene (EAODM) polymers in a free flowing powder or pellet form, processes for preparing these polymers, and the use of these polymers to prepare thermoplastic vulcanizates (TPV) are provided. Thermoplastic vulcanizate premixes can be prepared with the EAODM polymers and thermoplastic polymers, the premixes being easily converted into TPVs.
    Type: Grant
    Filed: January 31, 2007
    Date of Patent: April 21, 2009
    Assignee: Dow Global Technologies, Inc.
    Inventors: Susan Grace James, Robert Thomas Johnston