ALEXANDRIA, Va., July 3 -- United States Patent no. 12,344,958, issued on July 1, was assigned to Alliance for Sustainable Energy LLC (Golden, Colo.).

"III-N heteroepitaxial devices on rock salt substrates" was invented by Marshall Brooks Tellekamp Jr. (Denver), Andriy Zakutayev (Boulder, Colo.) and Md Shahadat Hasan Sohel (Littleton, Colo.).

According to the abstract* released by the U.S. Patent & Trademark Office: "Described herein are rock salt substrates and methods of making thereof that are useful as epitaxial substrates for semiconducting materials, including ultra-wide bandgap materials. Advantageously, the described rock salt substrates may be useful as substrates for Group III (Al, Ga, In)-N substrate allowing for pseudomorphic ...