US Patent Issued to China University of Mining and Technology on March 25 for "Method for purifying biological dust suppressant by two-stage ultrafiltration" (Chinese Inventors)

ALEXANDRIA, Va., March 26 -- United States Patent no. 12,257,549, issued on March 25, was assigned to China University of Mining and Technology (Xuzhou, China).

"Method for purifying biological dust suppressant by two-stage ultrafiltration" was invented by Hetang Wang (Jiangsu, China), Qi Zhang (Jiangsu, China) and Yuxuan Wang (Jiangsu, China).

According to the abstract* released by the U.S. Patent & Trademark Office: "A method for purifying biological dust suppressant by two-stage ultrafiltration is provided, which utilizes the differences of physical characteristics such as solubility and molecular morphology of each substance in fermentation broth to separate and purify the target product by two-stage ultrafiltration. Firstly, the ferm...