ALEXANDRIA, Va., July 28 -- United States Patent no. 12,692,438, issued on July 28, was assigned to Seaborough Materials IP B.V. (Amsterdam).
"Y2O3:RE nanoparticles" was invented by Anne Claire Berends (Utrecht, Netherlands) and Marie Anne Van De Haar (Weesp, Netherlands).
According to the abstract* released by the U.S. Patent & Trademark Office: "The invention provides Y2O3:RE nanoparticles having a cubic crystal structure, wherein RE is a trivalent rare earth metal ion. The invention further provides a method of preparing Y2O3:RE nanoparticles, comprising: a) providing a mixture comprising (i) an yttrium salt and/or yttrium alkoxide, (ii) a rare earth metal salt and/or rare earth metal alkoxide, and (iii) an organic solvent; b) optional...