ALEXANDRIA, Va., June 5 -- United States Patent no. 12,275,644, issued on April 15, was assigned to U.S. Borax Inc. (Wilmington, Del.).
"Lithium carbonate production process and apparatus" was invented by Amit Patwardhan (Wilmington, Del.), Sandip Shinde (Wilmington, Del.) and Allen Wattenbarger (Wilmington, Del.).
According to the abstract* released by the U.S. Patent & Trademark Office: "A method of forming lithium carbonate from a lithium-bearing solution including:evaporating the lithium-bearing solution to precipitate a first group of impurities;removing the first group of impurities to form a first purified solution; andperforming a flash crystallisation step within a predetermined temperature range to crystallise a second group of ...