ALEXANDRIA, Va., Jan. 20 -- United States Patent no. 12,528,330, issued on Jan. 20, was assigned to CARRIER Corp. (Palm Beach Gardens, Fla.).

"Transport refrigeration system having direct current power sources" was invented by Xu She (Cohoes, N.Y.), HanJong Kim (Avon, Conn.), Mark Makwinski (Cromwell, Conn.) and Bart Antonie van Hassel (Weatogue, Conn.).

According to the abstract* released by the U.S. Patent & Trademark Office: "A transport refrigeration system includes a transport refrigeration unit configured to provide conditioned air to a refrigerated cargo space of a container; a low voltage DC power source including a fuel cell configured to provide electricity to the transport refrigeration unit; a power converter configured to con...