ALEXANDRIA, Va., Dec. 31 -- United States Patent no. 12,509,369, issued on Dec. 30, was assigned to SAMSUNG ELECTRONICS Co. Ltd. (Suwon-si, South Korea).
"Water production facility and method of replacing ion exchange resin" was invented by Yongjai Lee (Seoul, South Korea), Sanghoon Yoo (Cheonan-si, South Korea), Huchul Lee (Hwaseong-si, South Korea), Byungchan Choi (Hwaseong-si, South Korea) and Jieun Jang (Pyeongtaek-si, South Korea).
According to the abstract* released by the U.S. Patent & Trademark Office: "An ultrapure water (UPW) production facility includes a polisher filled with an ion exchange resin, an inflow line, an inflow valve connected to the inflow line and upstream of the polisher, an outflow line, an outflow valve connec...