Patents by Inventor Donald Robert Fields

Donald Robert Fields 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).

  • Sampling system for fluidized bed gas phase polymerization reaction systems
    Patent number: 6592827
    Abstract: There is provided an automated sampling system for taking polymer samples from a fluidized bed, gas phase reaction system which utilizes at least one volatile, hazardous monomer. The sampling system provides minimal sample-to-sample variability, improved reactor control and polymerization operability which minimizing potential exposure or release of the volatile, hazardous monomers.
    Type: Grant
    Filed: October 24, 2000
    Date of Patent: July 15, 2003
    Assignee: Univation Technologies LLC
    Inventors: Daniel Paul Zilker, Jr., Christopher Scott Hunnisett, Donald Robert Fields, Kiu Hee Lee