ALEXANDRIA, Va., Sept. 17 -- United States Patent no. 12,415,735, issued on Sept. 16, was assigned to TECHNOLOGICAL UNIVERSITY DUBLIN (Dublin).

"Sol-gel material, and use thereof" was invented by C. M. Iftekhar Hussain (Dublin), Mohamed Oubaha (Dublin), Brian Norton (Dublin) and Aidan Duffy (Dublin).

According to the abstract* released by the U.S. Patent & Trademark Office: "A thermophotovoltaic (TPV) system, comprises a substrate, an emitter material adhered to the substrate, and a thermophotovoltaic (TPV) cell. The emitter material is a typically a metal oxide doped nickel oxide sol-gel material, in which the metal is magnesium or zirconium, and in which the sol-gel material comprises 97-99 mol % metal oxide, and about 1-3 mol % nickel ...