ALEXANDRIA, Va., May 26 -- United States Patent no. 12,637,736, issued on May 26, was assigned to ECOPRO MATERIALS Co. LTD. (Pohang-si, South Korea).
"Hydrometallurgical recovery method for nickel sulfate" was invented by Dong Hee Kim (Pohang-si, South Korea), Yong Hun Kim (Pohang-si, South Korea) and Woo Jin Kim (Pohang-si, South Korea).
According to the abstract* released by the U.S. Patent & Trademark Office: "The present disclosure relates to a hydrometallurgical recovery method for nickel sulfate. More specifically, the present disclosure relates to a hydrometallurgical nickel sulfate recovery method in which a wet smelting process is used to extract a high-purity nickel sulfate aqueous solution from a raw material containing nickel ...