US Patent Issued to MAYEKAWA on May 6 for "Defrost system which utilizes electric heater for thermosiphon" (Japanese Inventors)

ALEXANDRIA, Va., June 10 -- United States Patent no. 12,292,226, issued on May 6, was assigned to MAYEKAWA MFG. Co. LTD. (Tokyo).

"Defrost system which utilizes electric heater for thermosiphon" was invented by Choiku Yoshikawa (Tokyo), Toshio Kutsuna (Tokyo), Nelson Mugabi (Tokyo), Daiki Kayashima (Tokyo) and Nobuo Oosuga (Tokyo).

According to the abstract* released by the U.S. Patent & Trademark Office: "A defrost system includes a thermosiphon defrost circuit that is provided by being branched from a circulation line, in which, at the time of defrosting, a CO2 refrigerant staying inside a fin-tube heat exchanger repeats a two-phase change of a gaseous form and reliquefaction, and which forms a CO2 circulation path together with the fin...