ALEXANDRIA, Va., Aug. 18 -- United States Patent no. 12,712,210, issued on Aug. 18, was assigned to DARAMIC LLC (Charlotte, N.C.).

"Laminated oxidation protected separator" was invented by Eric H. Miller (Philpot, Ky.), J. Kevin Whear (Utica, Ky.), John R. Timmons (Owensboro, Ky.), Jeffrey K. Chambers (Philpot, Ky.) and Pierre A. Hauswald (Dorlisheim, France).

According to the abstract* released by the U.S. Patent & Trademark Office: "A battery separator for a lead acid battery addresses the issues of acid stratification and separator oxidation arising from contaminants. The separator includes a microporous membrane and a diffusive mat affixed thereto. The diffusive mat has a three hour wick of: at least about 2.5 cm. The diffusive mat ma...