US Patent Issued to 3M Innovative Properties on Feb. 17 for "Substituted thiolate salt melt additives" (Minnesota, Wisconsin Inventors)

ALEXANDRIA, Va., Feb. 17 -- United States Patent no. 12,552,914, issued on Feb. 17, was assigned to 3M Innovative Properties Co. (St. Paul, Minn.).

"Substituted thiolate salt melt additives" was invented by Fuming B. Li (Woodbury, Minn.), Duane D. Fansler (Dresser, Wis.), Anthony F. Schultz (Forest Lake, Minn.), John M. Brandner (St. Paul, Minn.), Nathan E. Schultz (Woodbury, Minn.) and John M. Sebastian (Oakdale, Minn.).

According to the abstract* released by the U.S. Patent & Trademark Office: "Charged polymeric webs, such as electret webs, include a thermoplastic resin and a charge-enhancing additive. The additives are substituted heterocyclic thiolate salts. The heterocyclic thiolate salt has 2 nitrogen groups and a third group that m...