ALEXANDRIA, Va., July 30 -- United States Patent no. 12,374,682, issued on July 29, was assigned to MITSUI MINING & SMELTING Co. LTD. (Japan).

"Active material and process for producing the same" was invented by Daisuke Inoue (Ageo, Japan), Takuya Yamamoto (Ageo, Japan), Jaime W. Dumont (Lyons, Colo.), Arrelaine A. Dameron (Boulder, Colo.) and Barbara K. Hughes (Wheat Ridge, Colo.).

According to the abstract* released by the U.S. Patent & Trademark Office: "An active material includes a core portion, and a coating portion arranged on a surface of the core portion. The core portion contains elemental lithium (Li), elemental manganese (Mn), and elemental oxygen (O). The coating portion contains an element A (A is at least one selected from ...