ALEXANDRIA, Va., March 3 -- United States Patent no. 12,568,766, issued on March 3, was assigned to FUJIFILM Corp. (Tokyo).
"Polymer-based piezoelectric composite material film" was invented by Masayuki Haga (Minamiashigara, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "Provided is a polymer-based piezoelectric composite material film which has high conversion efficiency and is capable of reproducing a sound with a sufficient volume. The polymer-based piezoelectric composite material film is a film including a polymer-based piezoelectric composite material which contains piezoelectric particles in a matrix containing a polymer material, and two electrode layers which are laminated on both surfaces of ...