ALEXANDRIA, Va., Sept. 8 -- United States Patent no. 12,732,159, issued on Sept. 8, was assigned to Ningbo Semiconductor International Corp. (Ningbo, China).

"Film bulk acoustic resonator and fabrication method thereof" was invented by Herb He Huang (Ningbo, China), Hailong Luo (Ningbo, China) and Wei Li (Ningbo, China).

According to the abstract* released by the U.S. Patent & Trademark Office: "The present disclosure provides a film bulk acoustic resonator and a method for fabricating the film bulk acoustic resonator. The resonator includes a carrier substrate; a support layer bonded on the carrier substrate, where the support layer encloses a first cavity exposing the carrier substrate; a piezoelectric stacked structure covering the fir...