ALEXANDRIA, Va., June 18 -- United States Patent no. 12,326,256, issued on June 10, was assigned to RTX Corp. (Farmington, Conn.).

"Fuel nozzle for hydrogen-based fuel operation" was invented by Zhongtao Dai (West Hartford, Conn.) and Justin M. Locke (Tolland, Conn.).

According to the abstract* released by the U.S. Patent & Trademark Office: "A fuel nozzle for a gas turbine engine combustor includes a fuel nozzle assembly including an inflow tube disposed along and a nozzle axis, the inflow tube defining an inner air passage and a liquid swirler concentrically disposed about the inflow tube. The liquid swirler includes a liquid swirler inner wall, a liquid swirler outer wall having a liquid swirler outer wall end portion at a downstream-m...