Patents by Inventor Elizabeth M. Stacy

Elizabeth M. Stacy 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).

  • Olefin polymerization
    Patent number: 5179178
    Abstract: A process for polymerizing olefins wherin a suitable amount of a fumed refractory oxide is used to improve the flow of particulate catalyst as a slurry of that catalyst is charged to the polymerization zone.
    Type: Grant
    Filed: May 15, 1992
    Date of Patent: January 12, 1993
    Assignee: Phillips Petroleum Company
    Inventors: Elizabeth M. Stacy, M. Bruce Welch, Shirley J. Martin, Max P. McDaniel, Dale E. Pierce