ALEXANDRIA, Va., June 17 -- United States Patent no. 12,316,172, issued on May 27, was assigned to RHEINISCH-WESTFALISCHE TECHNISCHE HOCHSCHULE (RWTH) AACHEN (Aachen, Germany).

"Rotor for an electric ring machine, corresponding ring machine and method for producing a rotor" was invented by Jan-Dirk Reimers (Aachen, Germany), Rik De Doncker (Aachen, Germany), Tobias Berthold (Duren, Germany), Tobias Lange (Aachen, Germany) and Claude Pascal Weiss (Aachen, Germany).

According to the abstract* released by the U.S. Patent & Trademark Office: "The invention relates to an arrangement in the form of an electric ring machine in the implementation of a reluctance machine which is operated as a synchronous reluctance machine, in which recesses are ...