ALEXANDRIA, Va., July 23 -- United States Patent no. 12,365,628, issued on July 22, was assigned to Scio-Tech LLC (Las Vegas).
"CO 2 impregnated concrete" was invented by Robert George Richardson (Shingleton, Calif.).
According to the abstract* released by the U.S. Patent & Trademark Office: "Concrete made using the protocol described herein converts more of the available calcium hydroxide (Ca(OH)2) into calcium carbonate (CaCO3) and distributes it more thoroughly throughout the concrete mixture by converting it into calcium bicarbonate (Ca(HCO3)2) by adjusting the pH of the hydrating liquid and then deliberately adjusting the pH of the hydrating liquid again when precipitation of the CaCO3 from the hydration liquid is desired to more uni...