Patents by Inventor Kelli L. Campbell

Kelli L. Campbell 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).

  • Recovery of unreacted monomers in an olefin polymerization process
    Patent number: 5391656
    Abstract: A method of recovering and recycling monomers from a gas phase olefins polymerization reactor through the use of the monomer feed stream. A high pressure monomer source is reduced in pressure so as to reduce the temperature of the monomer source. The monomer source is then used to cool and condense monomers contained in various vent gas streams. The condensed monomers are then separated from the gas stream and recycled back to the reactor.
    Type: Grant
    Filed: September 24, 1993
    Date of Patent: February 21, 1995
    Assignee: Union Carbide Chemicals & Plastics Technology Corporation
    Inventors: David W. Campbell, Randall L. Force, Kelli L. Campbell