US Patent No. 11,920,280 B2;  Haier US Appliance Solutions, Inc., Wilmington, DE,  has been awarded a patent for a washing machine that addresses issues related to laundry scent additives used by consumers, such as concentrated scent pellets or oils. According  to Haier,  some shortfalls in the usage process include that the user is required to remember to supply pellets with each wash load, it may be difficult to know the correct or effective quantity of pellets to add for a given load. Addi...