ALEXANDRIA, Va., Sept. 23 -- United States Patent no. 12,421,348, issued on Sept. 23, was assigned to SWIMC LLC (Cleveland).

"Coating compositions and methods with polyfunctional carbamate salt" was invented by Nathan McCormick (Ham Lake, Minn.) and Jason Lindquist (Lino Lakes, Minn.).

According to the abstract* released by the U.S. Patent & Trademark Office: "A latent base catalyst and compositions and methods involving latent base-catalyzed Michael addition reaction are described herein. The described latent base catalyst is a substituted carbamate salt. The compositions described herein are derived from a Michael addition reaction and provide coatings, including primer coatings and direct-to-metal coatings, which have optimal potlife a...