ALEXANDRIA, Va., March 26 -- United States Patent no. 12,261,564, issued on March 25, was assigned to Conti Temic microelectronic GmbH (Ingolstadt, Germany).

"Method for operating a DC motor" was invented by Beat Bauer (Friedrichshafen, Germany), Frank Faha (Constance, Germany) and Erwin Kessler (Saulgau, Germany).

According to the abstract* released by the U.S. Patent & Trademark Office: "Method for operating a DC motor, where the DC motor is supplied with a variable DC voltage via a bridge circuit from a supply voltage and formed by a first, a second, a third and a fourth controllable switch, wherein the DC voltage is varied by pulse width modulation of the control signals driving the controllable switches of the bridge circuit. A contr...