ALEXANDRIA, Va., March 19 -- United States Patent no. 12,255,556, issued on March 18, was assigned to CAIRDAC (Antony, France).

"Piezoelectric-transducer energy harvester, in particular for powering an autonomous cardiac capsule, with a bending stiffness gradient oscillating structure" was invented by Willy Regnier (Longjumeau, France) and An Nguyen-Dinh (La Riche, France).

According to the abstract* released by the U.S. Patent & Trademark Office: "The harvester comprises a pendular unit comprising a beam that is elastically deformable in bending, a mount clamping a proximal end of the beam, and an inertial mass mounted at a free, distal end of the beam. The beam converts into an oscillating electric signal a mechanical energy produced by...