ALEXANDRIA, Va., Sept. 1 -- United States Patent no. 12,723,290, issued on Sept. 1, was assigned to SUMITOMO METAL MINING Co. LTD. (Tokyo).
"Method for treating sulfide" was invented by Hiroshi Takenouchi (Niihama, Japan), Shin-ichi Heguri (Niihama, Japan), Satoshi Asano (Niihama, Japan) and Hirofumi Shouji (Niihama, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "Provided is a method for treating a sulfide, the method being suitable for obtaining nickel and/or cobalt from a sulfide containing copper and nickel and/or cobalt. The method relates to a method for treating a sulfide containing copper and nickel and/or cobalt, the method including pulverizing the sulfide by subjecting the sulfide to a pulver...