ALEXANDRIA, Va., June 16 -- United States Patent no. 12,308,823, issued on May 20, was assigned to Murata Manufacturing Co. Ltd. (Nagaokakyo, Japan).
"Transversely-excited film bulk acoustic filters with symmetric layout" was invented by Ventsislav Yantchev (Sofia, Bulgaria).
According to the abstract* released by the U.S. Patent & Trademark Office: "There are disclosed acoustic resonators and radio frequency filter devices. A back surface of a single-crystal piezoelectric plate is attached to a surface of a substrate except for portions of the piezoelectric plate forming a plurality of diaphragms, each of which spans a respective cavity in the substrate. A conductor pattern is formed on the front surface, the conductor pattern including ...