Patents by Inventor James S. Fangmeier

James S. Fangmeier 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).

  • Apparatus and method for producing ethylene polymer
    Patent number: 5565175
    Abstract: An apparatus and method for producing ethylene polymer are provided which employ a conduit in the form of a closed loop (i.e. loop reactor) for receiving a flow of a monomer which includes ethylene, a polymerization catalyst and a diluent therethrough for the polymerization of the monomer to ethylene polymer. The conduit comprises at least one pipe constructed of rolled plate around which coolant fluid passes in heat exchange relationship.
    Type: Grant
    Filed: October 1, 1990
    Date of Patent: October 15, 1996
    Assignee: Phillips Petroleum Company
    Inventors: John D. Hottovy, Frederick C. Lawrence, Barry W. Lowe, James S. Fangmeier