US Patent Issued to Seiko Epson on Oct. 20 for "Piezoelectric element, liquid ejection head, and printer" (Japanese Inventors)

ALEXANDRIA, Va., Oct. 21 -- United States Patent no. 12,772,738, issued on Oct. 20, was assigned to Seiko Epson Corp. (Tokyo).

"Piezoelectric element, liquid ejection head, and printer" was invented by Yoshiki Yano (Chino, Japan), Tsukasa Hitomi (Chino, Japan), Daisuke Nagano (Matsumoto, Japan) and Shu Okada (Suwa, Japan).

According to the abstract* released by the U.S. Patent & Trademark Office: "A piezoelectric element includes: a first electrode; a second electrode; and a piezoelectric layer provided between the first electrode and the second electrode and including a plurality of layers containing a complex oxide having a perovskite type structure containing potassium, sodium, and niobium, in which an X-ray diffraction method is used ...