ALEXANDRIA, Va., June 25 -- United States Patent no. 12,341,352, issued on June 24, was assigned to Huawei Digital Power Technologies Co. Ltd. (Shenzhen, China).

"Foreign object detection apparatus and method and wireless charger" was invented by Shuyang Wang (Shenzhen, China), Zhixian Wu (Dongguan, China) and Yanding Liu (Dongguan, China).

According to the abstract* released by the U.S. Patent & Trademark Office: "A foreign object detection apparatus and method, and a wireless charger. In the foreign object detection apparatus, a signal generation module generates a first calibration excitation signal based on first indication information received from a processing module and generates at least two first calibration carrier signals based...