ALEXANDRIA, Va., Dec. 9 -- United States Patent no. 12,491,561, issued on Dec. 9, was assigned to PRO-BEAM GMBH & Co. KGAA (Gilching, Germany).

"Method and electron beam equipment for processing powdered materials at high acceleration voltages" was invented by Thorsten Lower (Munich) and Alexander Klassen (Munich).

According to the abstract* released by the U.S. Patent & Trademark Office: "Methods are provided for processing a powdery material with an electron beam system for additive manufacturing of components, which solve the problem of electrostatic powder expulsion and significantly reduce process times. This effect is achieved by using acceleration voltages of 90 kV or greater in the preheating step and/or in the melting step."

The...