ALEXANDRIA, Va., May 5 -- United States Patent no. 12,621,212, issued on May 5, was assigned to Qatar Foundation for Education, Science and Community Development (Doha, Qatar) and Iberdrola QSTP LLC (Doha, Qatar).

"Power grid surveillance via topology detection system using power line communications" was invented by Javier Hernandez Fernandez (Doha, Qatar), Aymen Omri (Doha, Qatar) and Roberto Di Pietro (Doha, Qatar).

According to the abstract* released by the U.S. Patent & Trademark Office: "Power grid surveillance via topology detection system using power line communications (PLC) is provided by observing, at first and second times, first and second signals, respectively, sent via PLC between a plurality of nodes in an electrical grid; ...