ALEXANDRIA, Va., March 17 -- United States Patent no. 12,577,551, issued on March 17, was assigned to JETEMA Co. LTD. (Gangwon-Do, South Korea).
"Method of purifying botulinum toxin" was invented by Jae Young Kim (Seoul, South Korea), Jeong Sun Nam (Seoul, South Korea), Seungho Kim (Seoul, South Korea), Seung Kwan Choi (Gyeonggi-do, South Korea), Hyun Taek Lim (Gyeonggi-do, South Korea) and Jin Hee Choi (Seoul, South Korea).
According to the abstract* released by the U.S. Patent & Trademark Office: "Disclosed is a method of purifying a botulinum toxin comprising (a) pre-treating a culture solution containing a botulinum toxin, (b) purifying the pre-treated botulinum toxin using cation exchange chromatography, (c) purifying the botulinum t...