Patents by Inventor David Lumgard Jr.

David Lumgard Jr. 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).

  • Method of removing dimethyl ether from an olefin stream
    Publication number: 20060111601
    Abstract: This invention is directed to a method of removing dimethyl ether from an olefin stream. The method includes distilling the olefin stream so that the dimethyl ether is separated out of the olefin stream with propane. The olefin stream can then be further distilled to provide a polymer grade ethylene stream and a polymer grade propylene stream, with each stream containing not greater than about 10 wppm dimethyl ether.
    Type: Application
    Filed: September 30, 2002
    Publication date: May 25, 2006
    Inventors: Minquan Cheng, Jeffrey Phillips, Michael Nicoletti, David Lumgard Jr., John Shutt, Jeffrey Kabin, Wilfried Borgmann, Josef Kunkel, Helmut Fritz, Roland Walzi, Gerhard Lauermann, Klaus Muller