ALEXANDRIA, Va., March 19 -- United States Patent no. 12,255,636, issued on March 18, was assigned to MURATA MANUFACTURING Co. LTD. (Kyoto, Japan).
"Acoustic wave filter device" was invented by Masakazu Mimura (Nagaokakyo, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "A bandpass acoustic wave filter device includes an IDT electrode and a dielectric film disposed on a piezoelectric substrate including a LiNbO3 layer, and an acoustic wave resonator is defined by the IDT electrode. The acoustic wave resonator utilizes the Rayleigh wave, and a response of an SH wave excited by the acoustic wave resonator is outside a pass band of the acoustic wave filter device."
The patent was filed on June 22, 2023, un...