ALEXANDRIA, Va., July 21 -- United States Patent no. 12,686,050, issued on July 21, was assigned to Arizona Board of Regents on behalf of Arizona State University (Scottsdale, Ariz.) and CACTUS MATERIALS INC. (Tempe, Ariz.).

"Passivated silver nanoparticle coatings and methods of making the same" was invented by Rafiqul Islam (Gilbert, Ariz.) and Francois Perreault (Tempe, Ariz.).

According to the abstract* released by the U.S. Patent & Trademark Office: "The instant disclosure is directed to passivated silver nanoparticle coatings and methods of making the same. A method may comprise obtaining a substrate having a surface, exposing the surface to a plurality of silver nanoparticles, applying a nucleating agent to the silver nanoparticles...