ALEXANDRIA, Va., Oct. 8 -- United States Patent no. 12,438,396, issued on Oct. 7.

"Wireless power transfer object detection circuit and method" was invented by Petru Emanuel Stingu (Dallas), Kenneth Moore (Dallas), Yulong Hou (Shanghai) and Ruwanga Dassanayake (Dallas).

According to the abstract* released by the U.S. Patent & Trademark Office: "In an embodiment, a method includes wirelessly transmitting power using a transmitter LC tank of a wireless power transmitter, wirelessly receiving power from the transmitter LC tank using a receiver LC tank of a wireless power receiver, interrupting wirelessly transmitting power for a slot period, during the slot period, measuring a receiver signal associated with the receiver LC tank, transmittin...