ALEXANDRIA, Va., July 15 -- United States Patent no. 12,662,716, issued on June 23, was assigned to SMS group GmbH (Dusseldorf, Germany).
"Method and smelting unit for pyrometallurgical smelting of metal- containing raw materials, waste materials and/or secondary waste materials" was invented by Frank Marlin Kaussen (Aachen, Germany), Nikolaus Peter Kurt Borowski (Dusseldorf, Germany), Timm Lux (Meerbusch, Germany) and Rolf Degel (Ratingen, Germany).
According to the abstract* released by the U.S. Patent & Trademark Office: "The present disclosure relates to a method and a smelting unit (1) for the pyrometallurgical smelting of metal-containing raw materials, waste materials and/or secondary waste materials (M) in the presence of an oxidi...