ALEXANDRIA, Va., Jan. 28 -- United States Patent no. 12,534,840, issued on Jan. 27, was assigned to Haier US Appliance Solutions Inc. (Wilmington, Del.).
"Unlocking laundry appliances with acoustic waves" was invented by MyungGeon Chung (Seoul, South Korea) and Wonmyung Seo (Seongnam, South Korea).
According to the abstract* released by the U.S. Patent & Trademark Office: "A method of operating a laundry appliance may include a step locking the laundry appliance. The method also may include a step of projecting acoustic waves. The acoustic waves may be modulated to carry an indicium of the laundry appliance. The acoustic waves may be projected by the laundry appliance. The method may also include a step of receiving the acoustic waves by ...