ALEXANDRIA, Va., June 9 -- United States Patent no. 12,649,674, issued on June 9, was assigned to NINGBO C.F ELECTRONIC TECH Co. LTD (Ningbo City, China).

"Method and device for preparing slightly acidic electrolyzed water with controllable and stable concentration" was invented by Yiwu Xu (Ningbo City, China), Peifeng Chen (Ningbo City, China) and Zefeng Chen (Ningbo City, China).

According to the abstract* released by the U.S. Patent & Trademark Office: "The disclosure provides a method and device for preparing slightly acidic electrolyzed water with a controllable and stable concentration. According to the method, a solution addition velocity of a first solution addition device is adjusted according to a difference between a detected v...