ALEXANDRIA, Va., March 12 -- United States Patent no. 12,249,666, issued on March 11, was assigned to The Boeing Co. (Arlington, Va.).

"Use of a low bandgap absorber region in a laser power converter" was invented by Christopher M. Fetzer (Saugus, Calif.) and Dimitri D. Krut (Encino, Calif.).

According to the abstract* released by the U.S. Patent & Trademark Office: "A low bandgap absorber region (LBAR) used in a laser power converter (LPC). The laser power converter is comprised of one or more subcells on a substrate, wherein at least one of the subcells has an emitter and base, with the low bandgap absorber region coupled between the emitter and base. The emitter and base are comprised of a material with a bandgap higher than a waveleng...