ALEXANDRIA, Va., June 5 -- United States Patent no. 12,278,352, issued on April 15, was assigned to CPS Technology Holdings LLC (New York).
"Methods for purifying and recycling lead from spent lead-acid batteries" was invented by Matthew A. Spence (Lindenhurst, Ill.).
According to the abstract* released by the U.S. Patent & Trademark Office: "The present disclosure relates to methods by which lead from spent lead-acid batteries may be extracted, purified, and used in the construction of new lead-acid batteries. A method includes: (A) forming a mixture including a carboxylate source and a lead-bearing material; (B) generating a first lead salt precipitate in the mixture as the carboxylate source reacts with the lead-bearing material; (C) i...