ALEXANDRIA, Va., Sept. 3 -- United States Patent no. 12,407,035, issued on Sept. 2, was assigned to SK INNOVATION Co. LTD. (Seoul, South Korea).

"Method for recovering active metal of lithium secondary battery" was invented by Suk Joon Hong (Daejeon, South Korea), Hyeon Bae Ha (Daejeon, South Korea), Ji Min Kim (Daejeon, South Korea), Min Ji Sung (Daejeon, South Korea) and Sung Real Son (Daejeon, South Korea).

According to the abstract* released by the U.S. Patent & Trademark Office: "In a method for recovering an active metal of a lithium secondary battery, a cathode active material mixture is prepared from a cathode of a lithium secondary battery. A first reductive process using a first reductive reaction gas and a second reductive proc...