ALEXANDRIA, Va., Sept. 30 -- United States Patent no. 12,431,866, issued on Sept. 30, was assigned to MURATA MANUFACTURING Co. LTD. (Kyoto, Japan).
"Acoustic wave filter" was invented by Akira Noguchi (Nagaokakyo, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "An acoustic wave filter includes a first filter circuit with a predetermined frequency band as a pass band provided on a first path connecting first and second signal terminals, and an additional resonant circuit connected in parallel with at least a portion of the first filter circuit. The additional resonant circuit includes an IDT electrode group including IDT electrodes positioned along an acoustic wave propagation direction. At least one res...