ALEXANDRIA, Va., May 19 -- United States Patent no. 12,629,520, issued on May 19, was assigned to YA-MAN LTD. (Tokyo).
"Beauty device and control method therefor" was invented by Iwao Yamazaki (Tokyo).
According to the abstract* released by the U.S. Patent & Trademark Office: "A beauty device applies an alternating current to the skin surface of a user and changes a frequency while keeping a voltage or the like constant in order to adjust the degree of a bodily sensation. A beauty device includes: an electrode portion that includes two or more electrodes and applies the alternating current between the electrodes; a frequency setting portion that sets the frequency of the alternating current either in multiple stages of three or more stage...