ALEXANDRIA, Va., June 9 -- United States Patent no. 12,286,355, issued on April 29, was assigned to Lawrence Livermore National Security LLC (Livermore, Calif.).

"Additive manufacturing of microanalytical reference materials" was invented by Kin I Sio (Walnut Creek, Calif.), Joshua Kuntz (Livermore, Calif.), Elaine Lee (Brooklyn, N.Y.), Tashi Parsons-Davis (Antioch, Calif.), Andrew Pascall (Livermore, Calif.), Kevin E. Roberts (Brentwood, Calif.), Bryan B. Bandong (Pleasanton, Calif.) and Jennifer A. Shusterman (Pleasanton, Calif.).

According to the abstract* released by the U.S. Patent & Trademark Office: "A method includes acquiring particles doped with at least one analyte and forming a monolithic reference material. The method include...