ALEXANDRIA, Va., Sept. 24 -- United States Patent no. 12,744,509, issued on Sept. 22, was assigned to Skyworks Solutions Inc. (Irvine, Calif.).
"Multilayer piezoelectric substrate device with polycrystalline substrate" was invented by Rei Goto (Osaka, Japan) and Hironori Fukuhara (Ibaraki, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "A multilayer piezoelectric substrate for a surface acoustic wave resonator comprises a carrier substrate having an upper surface, a high acoustic velocity dielectric layer having a lower surface disposed on the upper surface of the carrier substrate and an upper surface to reflect acoustic energy generated by the surface acoustic wave resonator away from the carrier subs...