US Patent Issued to SUMITOMO METAL MINING on Nov. 18 for "Production method and production apparatus for nickel sulfate solution" (Japanese Inventor)

ALEXANDRIA, Va., Nov. 18 -- United States Patent no. 12,473,208, issued on Nov. 18, was assigned to SUMITOMO METAL MINING Co. LTD. (Tokyo).

"Production method and production apparatus for nickel sulfate solution" was invented by Hitoshi Ishida (Niihama, Japan).

According to the abstract* released by the U.S. Patent & Trademark Office: "Provided is a production method and a production apparatus that increase a throughput of nickel sulfate per equipment. A first dissolution step I of introducing a nickel briquette, sulfuric acid, and water to a leaching tank (1) and dissolving the nickel briquette to obtain a primary nickel sulfate solution, and a second dissolution step II of introducing the primary nickel sulfate solution and additionally...