ALEXANDRIA, Va., Jan. 28 -- United States Patent no. 12,538,389, issued on Jan. 27.
"Heating pad and system" was invented by Guangsen Xie (Maoming, China).
According to the abstract* released by the U.S. Patent & Trademark Office: "A heating pad includes an operation region and a heating region fixedly connected to the operation region. The operation region includes a circuit board and an operation interface electrically connected to the circuit board. The heating region includes a heating wire. The operation interface sends an electric signal to the circuit board to control the temperature of the heating wire to reach a preset desired temperature. Multiple gears do not need to be arranged, and the desired temperature is preset, such that...