ALEXANDRIA, Va., July 9 -- United States Patent no. 12,355,339, issued on July 8, was assigned to CARRIER Corp. (Palm Beach Gardens, Fla.).

"Hybrid power system for transport refrigeration systems" was invented by Ismail Agirman (Southington, Conn.).

According to the abstract* released by the U.S. Patent & Trademark Office: "A transport refrigeration system includes a compressor, condenser and evaporator; an inverter providing a multiphase, AC output voltage to the compressor; and a DC power system having an output coupled to the inverter, the DC power system including: a primary power source; a DC-AC converter connected to the primary power source; a transformer connected to the DC-AC converter; an AC-DC converter connected to the transf...