ALEXANDRIA, Va., July 15 -- United States Patent no. 12,662,000, issued on June 23, was assigned to AUDI AG (Ingolstadt, Germany).

"Method for operating a drive system" was invented by Franz Honkomp (Ingolstadt, Germany) and Marco Puschner (Gaimersheim, Germany).

According to the abstract* released by the U.S. Patent & Trademark Office: "A method for operating a drive system is provided in which the drive system may include at least one electric drive unit and an auxiliary drive unit. The rotor shaft of at least one electric device unit may be mounted via plain bearings. The output shaft of the auxiliary drive unit may be mounted using roller bearings. The rotor shaft may be configured to be coupled to the output shaft. The method for ope...