ALEXANDRIA, Va., Sept. 10 -- United States Patent no. 12,412,481, issued on Sept. 9, was assigned to Wing Aviation LLC (Palo Alto, Calif.).

"Context-based navigation of uncrewed vehicles using relative position markers" was invented by Marcus Hammond (Redwood City, Calif.).

According to the abstract* released by the U.S. Patent & Trademark Office: "In an example embodiment, a method carried out by an uncrewed aerial vehicle (UAV) may involve receiving a reference map of a cluster of charging pads from a server. The cluster may include a layout of charging pads and fiducial markers distributed across the layout, the reference map representing the layout and fiducial markers. The UAV may fly to the cluster and acquire an image of charging p...