Patents by Inventor Anthony Lee Zimmermann

Anthony Lee Zimmermann 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).

  • Ethylene recovery from a polymerization process
    Patent number: 7709585
    Abstract: A method for solution polymerizing ethylene wherein an ethane purge stream is separated, subjected to high efficiency cryogenic distillation, and a side cut from that distillation recycled to the polymerization process while the overhead and bottoms from that distillation are removed from the polymerization process.
    Type: Grant
    Filed: May 22, 2009
    Date of Patent: May 4, 2010
    Assignee: Equistar Chemicals, LP
    Inventors: Alberto Buchelli, Ronald J. Morris, William G. Todd, Anthony Lee Zimmermann