Patents by Inventor Daryl Henry Webster

Daryl Henry Webster 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).

  • Transfer of polymer particles between vapor phase polymerization reactors containing quench-cooled subfluidized particulate beds of polymerized monomer
    Patent number: 6069212
    Abstract: Method and apparatus are described for continuous vapor phase polymerization of a polymerizable monomer or mixture thereof to produce normally solid polymer substances in two or more serially disposed vapor phase polymerization reactors, each containing a quench-cooled subfluidized particulate bed of polymerized monomer. More specifically, method and apparatus for transfer of polymer particles between high pressure, reactive gas-filled, continuous, vapor-phase polymerization reactors while maintaining each at independently selected operating conditions.
    Type: Grant
    Filed: August 19, 1997
    Date of Patent: May 30, 2000
    Assignee: BP Amoco Corporation
    Inventors: Scott Ching-Sheng Hung, Kwok-Fu Lee, Joseph Michael Aubuchon, Daryl Henry Webster, James Hanawalt Lee