ALEXANDRIA, Va., March 12 -- United States Patent no. 12,249,973, issued on March 11, was assigned to TAIYO YUDEN Co. LTD. (Tokyo).
"Acoustic wave device, filter, and multiplexer" was invented by Koichi Sato (Tokyo), Shinji Yamamoto (Tokyo), Toshio Nishizawa (Tokyo) and Ryohei Komiyama (Tokyo).
According to the abstract* released by the U.S. Patent & Trademark Office: "An acoustic wave device includes a piezoelectric layer, a pair of comb-shaped electrodes disposed on a first surface of the piezoelectric layer, each of the pair of comb-shaped electrodes including electrode fingers that excite an acoustic wave, a support substrate disposed at a second surface side of the piezoelectric layer, and having protruding portions and/or recessed p...