ALEXANDRIA, Va., April 21 -- United States Patent no. 12,606,451, issued on April 21, was assigned to DOOSAN ENERBILITY Co. LTD (Changwon, South Korea).
"Heat treatment method of waste cathode materials and lithium recovery method using same" was invented by Jang Yong You (Suwon, South Korea), Wee Kwan Kang (Yongin, South Korea), Ho Yong Jo (Yongin, South Korea) and Chae Soo Lee (Yongin, South Korea).
According to the abstract* released by the U.S. Patent & Trademark Office: "A method of heat-treating a waste cathode material to recover lithium carbonate from the waste cathode material, and a lithium carbonate recovery method using the waste cathode material heat treatment method are provided. The method of heat-treating the waste cathode...