Patents by Inventor Richard C. Abel, Jr.

Richard C. Abel, 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).

  • Polymer recovery
    Patent number: 6150498
    Abstract: Methods for devolatilizing polymer solutions have been invented which include, in certain aspects, dissolving a viscous polymer in a solvent forming a polymer-solvent solution, introducing the polymer-solvent solution into a thermal dryer, heating or cooling the polymer-solvent solution in the thermal dryer forming product polymer with solvent removed and separated solvent (which may include other residuals), the separated solvent with other residuals if present vaporizing in the thermal dryer forming a vapor, removing the vapor from the thermal dryer, and discharging product polymer from the thermal dryer.
    Type: Grant
    Filed: July 3, 1997
    Date of Patent: November 21, 2000
    Assignees: The Dow Chemical Company, E. I. du Pont de Nemours and Company
    Inventors: Richard C. Abel, Jr., Michael E. Rowland, Robert B. Combs, Jerry W. Soape, Stanley W. Smith