ALEXANDRIA, Va., July 7 -- United States Patent no. 12,674,224, issued on July 7, was assigned to SMS group GmbH (Dusseldorf, Germany).
"Gas injection device" was invented by Andreas Schuring (Mulheim, Germany) and Nikolaus Peter Kurt Borowski (Dusseldorf, Germany).
According to the abstract* released by the U.S. Patent & Trademark Office: "A gas injection device for introducing a process gas into a non-ferrous metal melt and/or slag, in particular a copper melt and/or copper slag, including a hollow-cylindrical lance which is formed from a refractory material and/or graphite, preferably includes a refractory material and/or graphite. The lance has an inlet opening for the process gas and a gas injection module connected to the hollow-cyl...