US Patent Issued to Celgard on Dec. 16 for "Multilayer porous membranes and methods of making the same" (South Carolina Inventors)

ALEXANDRIA, Va., Dec. 16 -- United States Patent no. 12,496,815, issued on Dec. 16, was assigned to Celgard LLC (Charlotte, N.C.).

"Multilayer porous membranes and methods of making the same" was invented by Changqing Wang Adams (Fort Mill, S.C.) and David Anzini (Fort Mill, S.C.).

According to the abstract* released by the U.S. Patent & Trademark Office: "A multilayer membrane comprising at least two co-extruded layers where the two co-extruded layer contain different polymers and one of the two co-extruded layers contains an extrusion additive. Examples of useful extrusion additives may include a nucleating agent or a pore-forming particulate. A method for making the membrane is also disclosed. Using an extrusion additive when co-extrud...