ALEXANDRIA, Va., Oct. 21 -- United States Patent no. 12,766,447, issued on Oct. 20, was assigned to ALIT BIOTECH (SHANGHAI) Co. LTD. (Shanghai).

"Biological filtration systems and controlling methods thereof" was invented by Yu Liu (Shanghai) and Rui Chen (Shanghai).

According to the abstract* released by the U.S. Patent & Trademark Office: "The embodiments of the disclosure provide a biological filtration system and a controlling method for the biological filtration system. The biological filtration system for filtering a solution in a bioreactor, comprises: a filter device having a top end and a bottom end, one of the top end and the bottom end being in fluid communication with the bioreactor for filtering the solution in the bioreactor...