ALEXANDRIA, Va., Oct. 28 -- United States Patent no. 12,447,447, issued on Oct. 21, was assigned to Maschinenfabrik Gustav Eirich GmbH & Co. KG (Hardheim, Germany).
"Mixing tool for dry mixing and coating" was invented by Stefan Gerl (Werbach, Germany), Clemens Schmitt (Walldurn-Altheim, Germany) and Andreas Seiler (Tauberbischofsheim, Germany).
According to the abstract* released by the U.S. Patent & Trademark Office: "A tool for dry mixing and coating of powder mixtures includes a fixing shaft and an approximately disc-shaped element fixed thereto and of a diameter d, having an upper surface, a lower surface and a peripheral surface connecting the upper and lower surfaces. The disc-shaped element has a plurality of grooves extending par...