ALEXANDRIA, Va., Feb. 5 -- United States Patent no. 12,214,574, issued on Feb. 4, was assigned to ENGINEERED MATERIALS INC. (Buffalo Grove, Ill.).

"Barrier film substrate, method of making same, and use thereof" was invented by Keith W. Donaldson (Buffalo Grove, Ill.), Marshall Grove (Yakima, Wash.) and Joe Marks (Erie, Colo.).

According to the abstract* released by the U.S. Patent & Trademark Office: "A barrier film substrate includes a first layer including a polymer and a transition metal having chemical sequestering properties such that, upon exposure of the barrier film substrate to one or more chemical vapors, a reaction occurs between the transition metal and the one or more chemical vapors. A second layer is aligned with the first...