US Patent Issued to MURATA MANUFACTURING on March 18 for "Solidly-mounted transversely-excited film bulk acoustic filters with excess piezoelectric material removed" (Bulgarian Inventor)

ALEXANDRIA, Va., March 19 -- United States Patent no. 12,255,626, issued on March 18, was assigned to MURATA MANUFACTURING Co. LTD. (Nagaokakyo, Japan).

"Solidly-mounted transversely-excited film bulk acoustic filters with excess piezoelectric material removed" was invented by Ventsislav Yantchev (Sofia, Bulgaria).

According to the abstract* released by the U.S. Patent & Trademark Office: "Filters and methods of making filters are disclosed. A filter device includes a substrate, a piezoelectric plate, and an acoustic Bragg reflector between a surface of the substrate and a back surface of the piezoelectric plate. A conductor pattern on a front surface of the piezoelectric plate includes interdigital transducers (IDTs) of a plurality of re...