US Patent Issued to MURATA MANUFACTURING on Sept. 30 for "Acoustic wave filter and composite filter device" (Japanese Inventor)

ALEXANDRIA, Va., Sept. 30 -- United States Patent no. 12,431,869, issued on Sept. 30, was assigned to MURATA MANUFACTURING Co. LTD. (Kyoto, Japan).

"Acoustic wave filter and composite filter device" was invented by Keiji Okada (Nagaokakyo, Japan).

According to the abstract* released by the U.S. Patent & Trademark Office: "An acoustic wave filter includes an input end, an output end, and a series arm connecting the input end and the output end. The series arm includes n (n=3) acoustic wave resonators connected in series in an order of first, second, and third acoustic wave resonators. The first, second, and third acoustic wave resonators include multiple electrode fingers. The first, second, and third acoustic wave resonators include an mt...