ALEXANDRIA, Va., Sept. 23 -- United States Patent no. 12,426,506, issued on Sept. 23, was assigned to EVATEC AG (Trubbach, Switzerland).
"Piezoelectric coating and deposition process" was invented by Andrea Mazzalai (Trubbach, Switzerland), Volker Robisch (Chur, Switzerland) and Bernd Heinz (Buchs, Switzerland).
According to the abstract* released by the U.S. Patent & Trademark Office: "A substrate having a surface coated with a piezoelectric coating I, the coating including A-xMexN, wherein A is at least one of B, Al, Ga, In, Tl, and Me is at least one metallic element Me from the transition metal groups 3b, 4b, 5b 6b the lanthanides, and Mg the coating I having a thickness d, and further including a transition layer wherein the ratio of...