ALEXANDRIA, Va., June 25 -- United States Patent no. 12,342,589, issued on June 24, was assigned to Advanced Diamond Holdings LLC (Beltsville, Md.).

"Semiconductor substrate" was invented by John P. Ciraldo (Clarksburg, Md.).

According to the abstract* released by the U.S. Patent & Trademark Office: "A method for manufacturing a semiconductor substrate. The method provides a single-crystal diamond base layer. The method then forms a beryllium oxide (BeO) layer over the single-crystal diamond base layer. The method then forms a gallium nitride (GaN) layer over the BeO layer. In some embodiments, the method forms surfactants over the single-crystal diamond base layer and the BeO layer."

The patent was filed on Jan. 4, 2024, under Applicati...