ALEXANDRIA, Va., Aug. 18 -- United States Patent no. 12,708,498, issued on Aug. 18, was assigned to KONINKLIJKE PHILIPS N.V. (Eindhoven, Netherlands).
"Cleaning unit for a surface cleaning device" was invented by Jingliang Mao (Shoreline, Wash.) and Sungsoo Lee (Bellevue, Wash.).
According to the abstract* released by the U.S. Patent & Trademark Office: "A surface cleaning means is proposed based on the combined use of ultrasound and radiofrequency electromagnetic emissions, propagated onto a surface to be cleaned, to provide synergistic cleaning action. One aspect provides a cleaning unit which comprises a body which includes an ultrasound transducer arrangement and an RF emitter arrangement, and wherein the two are arranged such that, w...