ALEXANDRIA, Va., Jan. 20 -- United States Patent no. 12,528,220, issued on Jan. 20, was assigned to SILICONWARE PRECISION INDUSTRIES Co. LTD. (Taichung, Taiwan).
"Ultrasonic device" was invented by Yu-Lung Huang (Taichung, Taiwan), Chih-Hui Huang (Taichung, Taiwan), Cheng-Ying Hsieh (Taichung, Taiwan), Sin-Cyuan Lin (Taichung, Taiwan), Men-Yeh Chiang (Taichung, Taiwan), Chao-Lin Chang (Taichung, Taiwan) and Ting-Hsu Lu (Taichung, Taiwan).
According to the abstract* released by the U.S. Patent & Trademark Office: "An ultrasonic device is provided and includes an action member, a driving member and a rotating shaft connected to the driving member. The action member provides ultrasonic vibration and vibrates the driving member, so that the d...