ALEXANDRIA, Va., Feb. 3 -- United States Patent no. 12,542,536, issued on Feb. 3, was assigned to MURATA MANUFACTURING Co. LTD. (Kyoto, Japan).
"Composite filter device" was invented by Yasuhiro Shimizu (Nagaokakyo, Japan), Sunao Yamazaki (Nagaokakyo, Japan) and Kenta Maeda (Nagaokakyo, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "In a composite filter device, a first acoustic wave resonator includes a functional electrode on a first main surface of a first piezoelectric substrate, and a wiring electrode is on the first main surface and is not connected to a signal potential. A support is on the first main surface and surrounds the first acoustic wave resonator. A second piezoelectric substrate is on...