ALEXANDRIA, Va., May 12 -- United States Patent no. 12,624,486, issued on May 12, was assigned to HAIER IOC ECOSYSTEM TECHNOLOGIES (SHANGHAI) Co. LTD. (Shanghai) and HAIER SMART HOME Co. LTD. (Qingdao, China).
"Washing machine control method for dispensing liquid, and washing machine" was invented by Sheng Xu (Qingdao, China), Dongsong Sun (Qingdao, China), Yanfen Lv (Qingdao, China), Tao Zhang (Qingdao, China) and Chuanrong Ma (Qingdao, China).
According to the abstract* released by the U.S. Patent & Trademark Office: "A washing machine control method includes receiving an instruction for dispensing laundry treatment agent; controlling a switching valve to be in a preset neutral position where a valve core is not communicated with liquid...