ALEXANDRIA, Va., Dec. 31 -- United States Patent no. 12,512,821, issued on Dec. 30, was assigned to TAIYO YUDEN Co. LTD. (Tokyo).
"Multiplexer" was invented by Kazushige Hatakeyama (Tokyo) and Jyunichi Hamasaki (Tokyo).
According to the abstract* released by the U.S. Patent & Trademark Office: "A multiplexer includes a transmit filter including first acoustic wave resonators connected to a first path between a common terminal and a transmit terminal, one or some first acoustic wave resonators of the first acoustic wave resonators being provided on a first substrate, and a remaining first acoustic wave resonator being provided on a second substrate, and a receive filter including second acoustic wave resonators connected to a second path b...