ALEXANDRIA, Va., Sept. 23 -- United States Patent no. 12,426,510, issued on Sept. 23, was assigned to SEIKO EPSON Corp. (Japan).
"Piezoelectric element" was invented by Takayuki Yonemura (Suwa, Japan) and Jiro Kato (Suwa, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "A piezoelectric element includes a piezoelectric layer containing a helical chiral polymer exhibiting piezoelectric properties, a first electrode layer, a second electrode layer, a first coupling portion provided on the first electrode layer, and a second coupling portion provided on the second electrode layer, in which an overlapped portion where the piezoelectric layer, the first electrode layer, and the second electrode layer overlap i...