ALEXANDRIA, Va., June 19 -- United States Patent no. 12,330,854, issued on June 17, was assigned to United States Postal Service (Washington).

"Systems and methods for maintaining temperature control of items in a distribution network" was invented by James Edward Lee Sr. (St. Leonard, Md.), Ryan M. Luckay (Vienna, Va.) and Robert E. Dixon Jr. (Haymarket, Va.).

According to the abstract* released by the U.S. Patent & Trademark Office: "A device, system, and method for maintaining temperature control of a distribution item, or of the contents of a distribution item, as the distribution item moves through the distribution network. A container housing an item can include a cooling unit, a heating unit, or both, and control circuitry includin...