ALEXANDRIA, Va., Feb. 3 -- United States Patent no. 12,540,369, issued on Feb. 3, was assigned to KANTO DENKA KOGYO Co. LTD. (Tokyo).
"Method for recovering lithium" was invented by Takuro Abe (Kurashiki, Japan), Yusuke Suzuki (Kurashiki, Japan) and Shinsuke Katayama (Kurashiki, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "Provided is a method for recovering lithium from a material containing fluorine and lithium. The method includes: mixing the material with an aqueous sulfuric acid solution or water to prepare a mixed liquid; and mixing the mixed liquid with a slightly or sparingly soluble calcium-containing alkaline agent to form a precipitate containing fluorine and calcium, followed by solid-liq...