ALEXANDRIA, Va., April 21 -- United States Patent no. 12,607,494, issued on April 21, was assigned to OTTO ID SOLUTIONS GMBH (Frankfurt, Germany).

"Emptying detection device, emptying system and emptying detection method" was invented by Karsten Otto (Frankfurt, Germany) and Tobias Lake (Frankfurt, Germany).

According to the abstract* released by the U.S. Patent & Trademark Office: "The present disclosure relates to an emptying detection device configured to provide an emptying signal to an emptying system for emptying a container, such as a dosing system including a suction lance, a corresponding suction lance and a corresponding emptying system. The emptying detection device is configured to determine a level of a liquid in the containe...