ALEXANDRIA, Va., Oct. 21 -- United States Patent no. 12,441,275, issued on Oct. 14, was assigned to Waymo LLC (Mountain View, Calif.).

"Cleaning for rotating sensors" was invented by Seth Gilbertson (Dublin, Calif.), Stephan Heinrich (Mountain View, Calif.) and Michael Hall-Snyder (Redwood City, Calif.).

According to the abstract* released by the U.S. Patent & Trademark Office: "Aspects of the disclosure relate to cleaning rotating sensors having a sensor housing with a sensor input surface. For instance, a first signal from a position sensor indicating a current position of the sensor housing may be received. A second signal to activate a liquid nozzle and an air nozzle, the liquid nozzle being configured to provide a spray of liquid and...