ALEXANDRIA, Va., Sept. 23 -- United States Patent no. 12,421,640, issued on Sept. 23, was assigned to Haier US Appliance Solutions Inc. (Wilmington, Del.).

"Commercial laundry appliance system and method of tracking additive usage" was invented by Jose Efren Rodriguez Munoz (Louisville, Ky.), Anna Rudek (Gainesville, Fla.), Reese Rapin (Mason, Ohio) and Carrie Li (Louisville, Ky.).

According to the abstract* released by the U.S. Patent & Trademark Office: "A laundry appliance system includes a main server, a plurality of laundry appliances operatively connected with the main server, and a controller configured to perform an operation. The operation includes receiving a plurality of signals from the plurality of laundry appliances, the plu...