ALEXANDRIA, Va., Sept. 10 -- United States Patent no. 12,413,204, issued on Sept. 9, was assigned to TAIYO YUDEN Co. LTD. (Tokyo).
"Acoustic wave device, filter, and multiplexer" was invented by Takashi Matsuda (Tokyo).
According to the abstract* released by the U.S. Patent & Trademark Office: "An acoustic wave device includes a first piezoelectric layer that is a rotated Y-cut lithium tantalate substrate and has a first thickness, a second piezoelectric layer that is a rotated Y-cut lithium niobate substrate, is stacked on the first piezoelectric layer, has a second thickness that is less than the first thickness, and has a spontaneous polarization direction that is substantially opposite to a spontaneous polarization direction of the fi...