ALEXANDRIA, Va., July 21 -- United States Patent no. 12,687,562, issued on July 21, was assigned to Piezo Ultratech Co. LTD. (Tainan City, Taiwan).

"Shear mode piezoelectric accelerometer" was invented by Cheng-Ying Li (Tainan City, Taiwan) and Sheng-Yuan Chu (Tainan City, Taiwan).

According to the abstract* released by the U.S. Patent & Trademark Office: "A shear mode piezoelectric accelerometer includes a ring-shaped piezoelectric element, a central shaft, a mass block, a first electrode, and a second electrode. The ring-shaped piezoelectric element includes an outer ring wall and an inner ring wall. The central shaft is made of conductive material and is fixed through the inner ring wall of the ring-shaped piezoelectric element. The ma...