ALEXANDRIA, Va., Dec. 2 -- United States Patent no. 12,489,419, issued on Dec. 2, was assigned to SPECTRON (SHENZHEN) TECHNOLOGIES Co. LTD (Guangdong, China).
"Resonator and electronic device" was invented by Songbin Gong (Shenzhen, China) and Gabriel Vidal-Alvarez (Shenzhen, China).
According to the abstract* released by the U.S. Patent & Trademark Office: "The present application relates to a resonator and an electronic device. A high and low acoustic impedance alternating layer, a bottom temperature coefficient of frequency compensation layer, a bottom electrode layer, a piezoelectric layer, a top electrode layer and a top temperature coefficient of frequency compensation layer are sequentially stacked on a substrate by using a specifi...