Patents by Inventor Dennis R. Dembicki

Dennis R. Dembicki 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).

  • Use of membranes for ethylene recovery in polymerization processes
    Patent number: 4623704
    Abstract: An improved process for recovery of ethylene from a polymerization process is described. A normally solid membrane is employed to recover an ethylene enriched gas stream from the polymerization vent gases. The ethylene enriched gas stream is recycled to the polymerization process.
    Type: Grant
    Filed: November 8, 1985
    Date of Patent: November 18, 1986
    Assignee: The Dow Chemical Company
    Inventors: Dennis R. Dembicki, Frederick L. Coan, Craig L. Glassford, Dana C. Overman