ALEXANDRIA, Va., Feb. 11 -- United States Patent no. 12,547,257, issued on Feb. 10, was assigned to ICHIA TECHNOLOGY (SUZHOU) Co. LTD. (Jiangsu, China) and ICHIA TECHNOLOGIES INC. (Taoyuan, Taiwan).

"Knob structure" was invented by Chung-Ching Chou (Taoyuan, Taiwan) and Chung-Yu Chen (Taoyuan, Taiwan).

According to the abstract* released by the U.S. Patent & Trademark Office: "A knob structure can be installed on a touch control function display and includes a seat, a substrate, a trigger element, and an operating cover. The substrate is disposed on the seat, and includes a carrier, a ring pad, and a plurality of inner pads and outside pads. The carrier has first, second, and third ring configuration regions that jointly define a center. ...