ALEXANDRIA, Va., Nov. 11 -- United States Patent no. 12,470,876, issued on Nov. 11, was assigned to COMMISSARIAT A L'ENERGIE ATOMIQUE ET AUX ENERGIES ALTERNATIVES (Paris).
"Variable resonant frequency electromechanical device and associated acoustic device" was invented by Romain Liechti (Grenoble, France) and Fabrice Casset (Grenoble, France).
According to the abstract* released by the U.S. Patent & Trademark Office: "An electromechanical device includes at least one movable mechanical structure including at least one movable mechanical element; for each movable mechanical element of each movable mechanical structure a first piezoelectric layer, the first layer being disposed on a first part of the movable element so as to be able to act...