ALEXANDRIA, Va., May 19 -- United States Patent no. 12,633,901, issued on May 19, was assigned to RF360 Singapore Pte. Ltd. (Singapore).

"Surface acoustic wave resonator and multiplexer including the same" was invented by Matthias Knapp (Munich) and Christian Huck (Munich).

According to the abstract* released by the U.S. Patent & Trademark Office: "A surface acoustic wave resonator (100) comprises a layered substrate including a carrier substrate (110) and a dielectric layer (112) having a low acoustic velocity. Another dielectric layer (122) is disposed on a piezoelectric layer (113) and interdigitated electrodes (131, 132) having an acoustic velocity lower than the acoustic velocity of the carrier substrate (110) and a positive temperat...