ALEXANDRIA, Va., July 15 -- United States Patent no. 12,665,444, issued on June 23, was assigned to Sony Group Corp. (Tokyo).
"Charging device, power receiving device, and method" was invented by Katsuya Suzuki (Tokyo).
According to the abstract* released by the U.S. Patent & Trademark Office: "Attenuation of transmission power transmitted from a power transmission coil according to distance causes a problem that a power receiving device such as a smartphone with an accessory cover may increase a difference from reception power received by a power reception coil and prevent normal charging. Therefore, provided is a charging device including, for example, a transmission unit that periodically transmits a response request, a reception unit ...