ALEXANDRIA, Va., Oct. 28 -- United States Patent no. 12,456,557, issued on Oct. 28, was assigned to Standard Nuclear Inc. (Oak Ridge, Tenn.).

"Adjusting wait time between burn cycles or merging burn cycles" was invented by Paolo Francesco Venneri (Seattle) and Michael John Eades (Seattle).

According to the abstract* released by the U.S. Patent & Trademark Office: "Passive reactivity control technologies that enable reactivity control of a nuclear thermal propulsion (NTP) system with little to no active mechanical movement of circumferential control drums. By minimizing or eliminating the need for mechanical movement of the circumferential control drums during an NTP burn, the reactivity control technologies simplify controlling an NTP rea...