ALEXANDRIA, Va., July 21 -- United States Patent no. 12,686,621, issued on July 21, 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 including a step of calcining, at 600deg C. or higher, one of a mixture of a lithium compound and a metal composite compound containing at least Ni and a reactant obtained by preliminarily calcining the mixture to obtain a calcined product, a step of cooling the calcined product from a calcining temperature in the step of obtaining the calcined product to 150deg C. or lowe...