ALEXANDRIA, Va., Aug. 20 -- United States Patent no. 12,390,991, issued on Aug. 19, was assigned to Nikon SLM Solutions AG (Lubeck, Germany).

"Method and device for controlling an irradiation system for producing workpieces" was invented by Andreas Wiesner (Lubeck, Germany), Jan Wilkes (Lubeck, Germany), Christiane Thiel (Lubeck, Germany) and Lukas Roesgen (Lubeck, Germany).

According to the abstract* released by the U.S. Patent & Trademark Office: "The invention relates to a method for controlling an irradiation system (20), the irradiation system (20) being used in a device (10) for the additive manufacturing of three-dimensional workpieces and comprising at least three irradiation units (22a-d, 50), the method comprising the following ...