ALEXANDRIA, Va., June 6 -- United States Patent no. 12,283,384, issued on April 22.
"Nuclear power plant" was invented by Takashi Sato (Kanagawa, China).
According to the abstract* released by the U.S. Patent & Trademark Office: "According to an embodiment, a nuclear plant has: an outer well; an in-Containment Atmosphere Dilution System to inject a gas that has a low concentration of oxygen in the outer well into a containment vessel; an accumulator containing pressurized oxygen therein; and a passive containment cooling system including: a scrubbing pool arranged in the outer well; a cooling water pool installed above a dry well and the outer well; a heat exchanger partly submerged in a cooling water; a wet well gas supply pipe that is c...