ALEXANDRIA, Va., Sept. 1 -- United States Patent no. 12,721,399, issued on Sept. 1, was assigned to POU CHEN Corp. (Chang Hwa Hsien, Taiwan).

"Shoe and method for determining flatness of ground" was invented by Yu-Ping Tseng (Zhubei City, Taiwan) and Liang-Chia Tseng (Chang Hwa Hsien, Taiwan).

According to the abstract* released by the U.S. Patent & Trademark Office: "A shoe includes a shoe body, a power supply unit, a sensing unit and a control unit. The power supply unit is disposed in the shoe body and is configured to provide electric power. The sensing unit and the control unit are electrically connected to the power supply unit for receiving the electric power therefrom. The sensing unit is disposed in the shoe body and is configure...