US Patent Issued to Qisda on Oct. 27 for "Ultrasonic transducer including a piezoelectric material layer having a protrusion structure or a recess structure" (Taiwanese Inventor)

ALEXANDRIA, Va., Oct. 27 -- United States Patent no. 12,773,721, issued on Oct. 27, was assigned to Qisda Corp. (Taoyuan City, Taiwan).

"Ultrasonic transducer including a piezoelectric material layer having a protrusion structure or a recess structure" was invented by Fu-Sheng Jiang (Taoyuan City, Taiwan).

According to the abstract* released by the U.S. Patent & Trademark Office: "An ultrasonic transducer includes a piezoelectric material layer, a first electrode layer, and a second electrode layer. The piezoelectric material layer has an ultrasonic wave emitting side and a back side opposite to the ultrasonic wave emitting side. The piezoelectric material layer has a protrusion structure or a recess structure on the back side. The protru...