ALEXANDRIA, Va., June 4 -- United States Patent no. 12,321,541, issued on June 3, was assigned to SUNREX TECHNOLOGY CORP. (Taichung, Taiwan).
"Touch pad device" was invented by Chun-Chieh Chen (Taichung, Taiwan) and Yi-Wen Tsai (Taichung, Taiwan).
According to the abstract* released by the U.S. Patent & Trademark Office: "A touch pad device includes a base unit, a touch unit and a resilient unit. The base unit includes a bottom plate and a supporting member disposed on the bottom plate. The touch unit includes a touch pad, a circuit board connected to the touch pad, and a switch button disposed the circuit board. The switch button corresponds in position to the supporting member. The resilient unit is disposed between the bottom plate and...