ALEXANDRIA, Va., Aug. 5 -- United States Patent no. 12,698,422, issued on Aug. 4, was assigned to 3M Innovative Properties Co. (St. Paul, Minn.).

"Electrically conductive masking tape" was invented by Jie Huang (Shanghai), Jing Fang (Shanghai), Jeffrey W. McCutcheon (Baldwin, Wis.), Su Zhang (Shanghai) and Dong Yang (Shanghai).

According to the abstract* released by the U.S. Patent & Trademark Office: "Electrically conductive masking tapes include an electrically conductive backing and an electrically conductive pressure sensitive adhesive layer. The pressure sensitive adhesive contains an acrylate-based copolymeric matrix, a crosslinker, an electrically conductive filler, and at least one antioxidant. The acrylate-based copolymeric matri...