ALEXANDRIA, Va., July 15 -- United States Patent no. 12,665,569, issued on June 23, was assigned to Skyworks Solutions Inc. (Irvine, Calif.).

"Multilayer piezoelectric substrate filters with consistent band balance" was invented by Rei Goto (Osaka, Japan) and Motoyuki Tajima (Yokohama, Japan).

According to the abstract* released by the U.S. Patent & Trademark Office: "A die includes at least two surface acoustic wave resonators having different resonant frequencies. A first of the at least two surface acoustic wave resonators includes first interdigital transducer electrodes having a first duty factor and disposed on a multilayer piezoelectric substrate. The multilayer piezoelectric substrate a layer of piezoelectric material having a low...