ALEXANDRIA, Va., June 17 -- United States Patent no. 12,315,261, issued on May 27, was assigned to WM Intellectual Property Holdings LLC (Houston).

"System and method for automated detection of landfill changes" was invented by Kendric Blanchard (Denver), Jodi Blomberg (Denver) and Jiucai Zhang (Denver).

According to the abstract* released by the U.S. Patent & Trademark Office: "A system and method for monitoring and controlling of landfill operations are provided. One or more cameras are mounted on satellites, drones, and other devices to capture images and video of a landfill site from an aerial view. Users can analyze these images over time to automatically detect and classify material changes in landfill cover type and integrity, as w...