ALEXANDRIA, Va., Nov. 3 -- United States Patent no. 12,785,164, issued on Nov. 3, was assigned to SUMITOMO METAL MINING Co. LTD. (Tokyo).
"Method for producing valuable metal" was invented by Yu Yamashita (Niihama, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "The invention provides a method by which a valuable metal is recovered, in particular iron. A method for producing a valuable metal containing cobalt (Co), the method comprising: a preparation step in which a starting material that contains at least iron (Fe) and a valuable metal is prepared; a melting step in which a melt is obtained by heating and melting the starting material, and the melt is subsequently formed into a molten material that co...