ALEXANDRIA, Va., Aug. 6 -- United States Patent no. 12,377,604, issued on Aug. 5, was assigned to Peridot Print LLC (Palo Alto, Calif.).

"Three-dimensional printing with high density nanoparticles" was invented by Robert Ionescu (Palo Alto, Calif.), James William Stasiak (Corvallis, Ore.) and Garry Hinch (Corvallis, Calif.).

According to the abstract* released by the U.S. Patent & Trademark Office: "A multi-fluid kit for three-dimensional printing can include a fusing agent and a nanoparticle-containing agent. The fusing agent can include water and a radiation absorber, where the radiation absorber absorbs radiation energy and converts the radiation energy to heat. The nanoparticle-containing agent can include a liquid vehicle, high densi...