ALEXANDRIA, Va., Feb. 5 -- United States Patent no. 12,218,516, issued on Feb. 4, was assigned to Koninklijke Philips N.V. (Eindhoven, Netherlands).
"Wireless power transfer" was invented by Johannes Wilhelmus Draak (Horst, Netherlands), Wilhelmus Gerardus Maria Ettes (Leeuwarden, Netherlands) and Klaas Jakob Lulofs (Veldhoven, Netherlands).
According to the abstract* released by the U.S. Patent & Trademark Office: "A power transmitter (101) comprises a driver (201) generating a drive signal for an output resonance circuit comprising transmitter coil (103) generating a power transfer signal. A resonance detector (307) determines a coupled resonance frequency for the output resonance circuit during where the coupled resonance frequency is ...