Patents by Inventor Ira Thumma

Ira Thumma 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).

  • Continuous process of extruding and mechanically dispersing a polymeric resin in an aqueous or non-aqueous medium
    Patent number: 6512024
    Abstract: Stable aqueous dispersions or emulsions can be prepared by merging into a mechanical disperser a stream of a molten or liquid disperse phase with a stream of a molten or liquid continuous phase to form a dispersion or emulsion. The molten or liquid disperse phase stream contains a polymer that is preferably a solid at room temperature, but molten at some advanced temperature. The polymer is formed in a molten state or formed and melted by a continuous reaction process such as an extrusion process, including melt extrusion or compound extrusion. It has been discovered that low polydisperse submicron sized dispersion can be prepared by the method of the present invention.
    Type: Grant
    Filed: May 19, 2000
    Date of Patent: January 28, 2003
    Assignee: Dow Global Technologies Inc.
    Inventors: Richard A. Lundgard, James E. Pate, III, Christian Piechocki, Peter T. Keillor, III, Nanette E. Lutenske, Ira Thumma