ALEXANDRIA, Va., July 21 -- United States Patent no. 12,686,150, issued on July 21, was assigned to NITROcrete LLC (Fort Collins, Colo.).

"Cooling system and method" was invented by Mark Nelson (Fort Collins, Colo.) and Drew R. Nelson (Fort Collins, Colo.).

According to the abstract* released by the U.S. Patent & Trademark Office: "In accordance with one embodiment, a method is provided that includes providing a liquid nitrogen storage system configured to cool a supply of liquid nitrogen to a temperature below the vapor point of liquid nitrogen; coupling a piping system with the liquid nitrogen storage system to convey a portion of the supply of liquid nitrogen from the liquid nitrogen storage system; coupling the piping system with a li...