ALEXANDRIA, Va., July 3 -- United States Patent no. 12,348,137, issued on July 1, was assigned to Huawei Technologies Co. Ltd. (Shenzhen, China).

"Switch-mode power supply" was invented by Zhangrong Hu (Shanghai), Xin Liu (Shenzhen, China), Caofei Heng (Chengdu, China) and Kun Wu (Shanghai).

According to the abstract* released by the U.S. Patent & Trademark Office: "A switch-mode power supply includes a first switch circuit, at least one second switch circuit, a switch control circuit, a first inductor switching circuit, a coupled inductor, a voltage input end, and a voltage output end. The coupled inductor in the switch-mode power supply may be connected to the first switch circuit, to implement signal transmission between the coupled in...