US Patent Issued to Murata Manufacturing on Sept. 30 for "Acoustic resonators with high acoustic velocity layers" (American, Finnish, Bulgarian, Swiss Inventors)

ALEXANDRIA, Va., Sept. 30 -- United States Patent no. 12,431,855, issued on Sept. 30, was assigned to Murata Manufacturing Co. Ltd. (Nagaokakyo, Japan).

"Acoustic resonators with high acoustic velocity layers" was invented by Viktor Plesski (Gorgier, Switzerland), Julius Koskela (Helsinki), Ventsislav Yantchev (Sofia, Bulgaria), Patrick Turner (San Bruno, Calif.), Neal Fenzi (Santa Barbara, Calif.) and Robert B. Hammond (Santa Barbara, Calif.).

According to the abstract* released by the U.S. Patent & Trademark Office: "Acoustic resonators, acoustic filter devices and methods of making the same. An acoustic resonator device includes a piezoelectric layer having front and back surfaces, a high acoustic velocity layer on the back surface, an...