ALEXANDRIA, Va., Sept. 30 -- United States Patent no. 12,747,162, issued on Sept. 29, was assigned to DONGWOO FINE-CHEM Co. LTD. (Jeollabuk-do, South Korea).
"Method for producing lithium hydroxide" was invented by Ji-Hoon Lee (Gyeonggi-do, South Korea), Myung-Jin Kim (Gwangju, South Korea) and Bong-Jin Choi (Chungcheongnam-do, South Korea).
According to the abstract* released by the U.S. Patent & Trademark Office: "The present disclosure relates to a method for producing high-purity lithium hydroxide from a lithium-containing waste liquid of a spent lithium secondary battery."
The patent was filed on Oct. 19, 2020, under Application No. 17/909,042.
*For further information, including images, charts and tables, please visit: http://patf...