ALEXANDRIA, Va., July 7 -- United States Patent no. 12,674,352, issued on July 7, was assigned to Rotox Holding GmbH (Brechen, Germany).

"Method and device for welding at least two profiled sections for window or door frames or leaves" was invented by Albert Winkler (Rolbing, France), Alexander Luft (Kaiswerslautern, Germany) and Christian Denk (Schonau, Germany).

According to the abstract* released by the U.S. Patent & Trademark Office: "A method and a device (10) for welding at least two profiled sections (1) for window or door frames or leaves uses a heating unit (4) introduced between the profiled sections (2, 3) to be joined. At least two heating elements (5, 6) of the heating unit melt the profiled section ends (2, 3) at the end sur...