Patents by Inventor Sean W. Ewart

Sean W. Ewart 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).

  • PROCESS TO MAKE LONG CHAIN BRANCHED (LCB), BLOCK, OR INTERCONNECTED COPOLYMERS OF ETHYLENE
    Publication number: 20100311927
    Abstract: A process is taught, comprising polymerizing ethylene in the presence of a catalyst to form a crystalline ethylene-based polymer having a crystallinity of at least 50% as determined by DSC Crystallinity in a first reactor or a first part of a multi-part reactor and reacting the crystalline ethylene-based polymer with additional ethylene in the presence of a free-radical initiator to form an ethylenic polymer in at least one other reactor or a later part of a multi-part reactor.
    Type: Application
    Filed: June 2, 2010
    Publication date: December 9, 2010
    Applicant: Dow Global Technologies Inc.
    Inventors: Teresa P. Karjala, Sean W. Ewart, Christopher R. Eddy, Alfred E. Vigil, Mehmet Demirors, Sarat Munjal, Wallace W. Yau