ALEXANDRIA, Va., June 5 -- United States Patent no. 12,275,245, issued on April 15, was assigned to SEIKO EPSON Corp. (Japan).
"Piezoelectric device, liquid ejecting head, and liquid ejecting apparatus" was invented by Daisuke Nagano (Matsumoto, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "A piezoelectric device includes a diaphragm provided on a side of one surface of a substrate and a piezoelectric actuator having a first electrode, a piezoelectric body layer, and a second electrode which are stacked on a side of a surface opposite to the substrate of the diaphragm, in which the piezoelectric actuator includes an active portion in which the piezoelectric body layer is pinched between the first elec...