ALEXANDRIA, Va., April 7 -- United States Patent no. 12,595,640, issued on April 7, was assigned to ZF FRIEDRICHSHAFEN AG (Friedrichshafen, Germany).

"Method for operating an electric drivetrain for a working machine, electric drivetrain for a working machine, and working machine" was invented by Rico Glockner (Pocking, Germany), Raphael Zohner (Huenfelden, Germany), Migen Bebeti (Munich), Stephan Schinacher (Egesheim, Germany), Stefan Traub (Friedrichshafen, Germany), Andreas Rothmund (Hohentengen, Germany) and Jurgen Legner (Friedrichshafen, Germany).

According to the abstract* released by the U.S. Patent & Trademark Office: "A method for operating an electric drivetrain of a working machine is provided wherein the drivetrain comprises ...