ALEXANDRIA, Va., Nov. 18 -- United States Patent no. 12,473,922, issued on Nov. 18, was assigned to GKN Sinter Metals Engineering GmbH (Radevormwald, Germany).

"Method for operating a pump assembly" was invented by Stefan Tiller (Sankt Augustin, Germany), Nils Bornemann (Bonn, Germany) and Hong Giang To (Dusseldorf, Germany).

According to the abstract* released by the U.S. Patent & Trademark Office: "A method for operating a pump assembly, wherein the pump assembly has at least one first drive means for conveying a fluid and an electric motor for driving the first drive means, the electric motor comprising at least one stator and one rotor, the rotor being connected at least to the first drive means via a driveshaft. The electric motor dr...