ALEXANDRIA, Va., July 15 -- United States Patent no. 12,662,393, issued on June 23, was assigned to Sumitomo Metal Mining Co. Ltd. (Tokyo).

"Method for producing lithium metal composite oxide" was invented by Yuki Matsumoto (Niihama, Japan).

According to the abstract* released by the U.S. Patent & Trademark Office: "A method for producing a lithium metal composite oxide, in which, in a calcining step of calcining a substance to be calcined using calcining means, the substance to be calcined is a mixture of a metal composite compound and a lithium compound or a mixture raw material containing a reactant of the metal composite compound and the lithium compound, a content rate of Li in the substance to be calcined is more than 5 mass % and 1...