ALEXANDRIA, Va., Feb. 26 -- United States Patent no. 12,233,382, issued on Feb. 25, was assigned to HANGZHOU NORMAL UNIVERSITY (Zhejiang, China).

"Efficient antifouling and hydrophilic polyethersulfone ultrafiltration membrane and preparation method thereof" was invented by Yongjin Li (Zhejiang, China), Chunjun Ni (Zhejiang, China) and Xin Zheng (Zhejiang, China).

According to the abstract* released by the U.S. Patent & Trademark Office: "A preparation method of an antifouling and hydrophilic polyethersulfone ultrafiltration membrane includes through the 60Co-Gamma radiation grafting chemical modification method, evenly distributing an ionic liquid on a surface of a polyethersulfone material, wherein the ionic liquid containing unsaturate...