ALEXANDRIA, Va., Oct. 21 -- United States Patent no. 12,765,547, issued on Oct. 20, was assigned to Qingdao Agricultural University (Qingdao, China).
"Degradable nano-preservative film with photodynamic bactericidal activity and preparation method therefor" was invented by Jian Ju (Qingdao, China), Jinglin Huang (Qingdao, China), Qianyu Li (Qingdao, China), Qingli Yang (Qingdao, China), Guangjie Che (Qingdao, China) and Fangyuan Zhao (Qingdao, China).
According to the abstract* released by the U.S. Patent & Trademark Office: "A degradable nano-preservative film with photodynamic bactericidal activity and a preparation method therefor, and belongs to the technical field of antibacterial preservative films is provided. The present invention...