ALEXANDRIA, Va., Feb. 24 -- United States Patent no. 12,562,602, issued on Feb. 24, was assigned to Apple Inc. (Cupertino, Calif.).
"Friendly metal loss estimation" was invented by Shubha Ramakrishnan (San Jose, Calif.), Adam L Schwartz (Redwood City, Calif.) and Jizhen Fu (San Jose, Calif.).
According to the abstract* released by the U.S. Patent & Trademark Office: "A wireless power transfer device can include a coil that couples to a corresponding coil of a counterpart device to facilitate wireless power transfer, a power converter coupled to the coil, and controller and communication circuitry that monitors one or more observable parameters associated with the wireless power transfer to detect a presence of a foreign object that is not...