ALEXANDRIA, Va., Sept. 10 -- United States Patent no. 12,413,196, issued on Sept. 9, was assigned to Murata Manufacturing Co. Ltd. (Nagaokakyo, Japan).
"Tuning acoustic resonators with back-side coating" was invented by Sean McHugh (Santa Barbara, Calif.).
According to the abstract* released by the U.S. Patent & Trademark Office: "A filter device is provided that includes a substrate and a piezoelectric plate attached to the substrate. A conductor pattern is formed at a first surface of the piezoelectric plate and includes interdigital transducers of series and shunt resonators that each have interleaved fingers at respective diaphragms of the plate suspended. A first dielectric coating layer is formed over the interleaved fingers of the ...