ALEXANDRIA, Va., Feb. 17 -- United States Patent no. 12,556,358, issued on Feb. 17, was assigned to Schweitzer Engineering Laboratories Inc. (Pullman, Wash.).

"Adaptive clock offset estimation for protection devices without time-based synchronization" was invented by Anirudhh Ravi (King of Prussia, Pa.), Veselin Skendzic (Schwenksville, Pa.), Vinod K. Yedidi (King of Prussia, Pa.), Pallavi Kulkarni (Chennai, India), Jay Hartshorn (Pullman, Wash.), Balaji Janarthanan (Downingtown, Pa.), Angelo D'Aversa (Ambler, Pa.) and Normann Fischer (Colfax, Wash.).

According to the abstract* released by the U.S. Patent & Trademark Office: "A system for determining channel delay or communication link asymmetry in an electric power system. The delay or a...