ALEXANDRIA, Va., July 7 -- United States Patent no. 12,676,596, issued on July 7, was assigned to Skyworks Solutions Inc. (Irvine, Calif.).
"Surface acoustic wave device having multilayer piezoelectric substrate and a dielectric layer with different thicknesses" was invented by Shoji Okamoto (Hirakata, Japan), Rei Goto (Osaka, Japan) and Hironori Fukuhara (Ibaraki, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "An acoustic wave device comprises a substrate including a piezoelectric material, interdigital transducer (IDT) electrodes including interdigitated electrode fingers disposed on a surface of the substrate, and a passivation layer formed on tops of the IDT electrodes and on the piezoelectric mate...