ALEXANDRIA, Va., Oct. 28 -- United States Patent no. 12,451,725, issued on Oct. 21, was assigned to Powercast Corp. (Pittsburgh).

"Powering devices using RF energy harvesting" was invented by John G. Shearer (Ligonier, Pa.), Charles E. Greene (Butler, Pa.) and Daniel W. Harrist (Carnegie, Pa.).

According to the abstract* released by the U.S. Patent & Trademark Office: "Disclosed is an apparatus for an application including a core device for the application. The apparatus includes a power (preferably RF energy) harvester connected to the core device to power the core device. Also disclosed is a method for an application. The method includes the steps of converting RF energy into usable energy. There is the step of powering the core device ...