ALEXANDRIA, Va., June 12 -- United States Patent no. 12,298,643, issued on May 13, was assigned to SAGE ELECTROCHROMICS INC. (Faribault, Minn.) and ALLIANCE FOR SUSTAINABLE ENERGY LLC (Golden, Colo.).

"Electrochromic nickel oxide simultaneously doped with lithium and a metal dopant" was invented by Dane T. Gillaspie (Golden, Colo.) and Douglas G. Weir (Northfield, Minn.).

According to the abstract* released by the U.S. Patent & Trademark Office: "An electrochromic device comprising a counter electrode layer comprised of lithium metal oxide which provides a high transmission in the fully intercalated state and which is capable of long-term stability, is disclosed. Methods of making an electrochromic device comprising such a counter electro...