ALEXANDRIA, Va., April 15 -- United States Patent no. 12,603,273, issued on April 14, was assigned to LG Chem Ltd. (Seoul, South Korea).

"Method of preparing positive electrode active material" was invented by Won Sig Jung (Daejeon, South Korea), Seung Beom Cho (Daejeon, South Korea) and Sang Soon Choi (Daejeon, South Korea).

According to the abstract* released by the U.S. Patent & Trademark Office: "A method of preparing a positive electrode active material that includes introducing a reaction mixture including a lithium source material and a nickel-manganese-cobalt precursor into a continuous firing furnace and subjecting the same to primary heat treatment, thereby preparing a fired mixture; subjecting the fired mixture to pulverization...