Patents by Inventor Leslie W. Benum

Leslie W. Benum 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).

  • Patent number: 6111156
    Abstract: A combined chain of a high temperature, high conversion steam cracker in combination with a polymerization or oligomerization unit provides capital and operating cost reduction.
    Type: Grant
    Filed: November 10, 1998
    Date of Patent: August 29, 2000
    Assignee: Nova Chemicals (International) S.A.
    Inventors: Michael C. Oballa, David Purvis, Andrzej Z. Krzywicki, Leslie W. Benum