ALEXANDRIA, Va., Aug. 6 -- United States Patent no. 12,377,614, issued on Aug. 5, was assigned to ROPEX Industrie-Elektronic GmbH (Bietigheim-Bissingen, Germany) and Force Global-ROPOX America LLC (Germantown, Wis.).

"Welding apparatus and method for evaluating an operating state of a welding apparatus" was invented by Manuel Schuller (Bietigheim-Bissingen, Germany) and Michael Parkinson (Hubertus, Wis.).

According to the abstract* released by the U.S. Patent & Trademark Office: "A welding apparatus includes: a first heating stack, wherein a first heating layer is electrically connected to a first electronic control circuit and is located between a first cover layer and a first electric insulator which is mounted on a first ledge; a secon...