US Patent Issued to KOREA ZINC, KEMCO on March 25 for "Method for producing nickel sulfate solution for secondary battery from nickel cathode" (South Korean Inventors)

ALEXANDRIA, Va., March 26 -- United States Patent no. 12,258,282, issued on March 25, was assigned to KOREA ZINC Co. LTD. (Seoul, South Korea) and KEMCO (Seoul, South Korea).

"Method for producing nickel sulfate solution for secondary battery from nickel cathode" was invented by Heon Sik Choi (Ulsan, South Korea), Jae Hoon Joo (Ulsan, South Korea) and Tae Kyung Lee (Seoul, South Korea).

According to the abstract* released by the U.S. Patent & Trademark Office: "A method for producing a nickel sulfate solution includes a leaching step of leaching a nickel cathode in sulfuric acid under a high temperature and a high pressure to produce a leachate, a neutralization step of neutralizing the leachate produced in the leaching step to produce a ...