ALEXANDRIA, Va., Oct. 27 -- United States Patent no. 12,776,422, issued on Oct. 27, was assigned to The Leapfrog Nuclear Co. (Des Moines, Wash.).

"Nuclear reactor fuel and associated systems and methods" was invented by Mark Wilbert Reed (Tacoma, Wash.).

According to the abstract* released by the U.S. Patent & Trademark Office: "Disclosed are embodiments of a nuclear fuel element for use in various types of nuclear reactors. One embodiment of the nuclear fuel element comprises a plurality of solid nuclear fuel particles, such as tristructural-isotropic (TRISO) fuel particles, intermixed in a non-solid matrix that is substantially stagnant relative to the plurality of solid nuclear fuel particles. The non-solid matrix may comprise a liquid...