ALEXANDRIA, Va., June 16 -- United States Patent no. 12,304,693, issued on May 20, was assigned to Smart Container Holdings LLC (Orlando, Fla.).

"Portable container system" was invented by Daniel M. Frohwein (Orlando, Fla.).

According to the abstract* released by the U.S. Patent & Trademark Office: "The portable container system includes a central locking hub that assembles a collection of containers into a carrying unit. The hub is cylindrical in shape and the containers are angular wedges projecting horizontally outward from the hub. Each container includes a vessel with a defined interior volume, and a lid. The containers are reversibly secured to the hub when the containers are received around the hub base, and the hub upper part is s...