ALEXANDRIA, Va., July 16 -- United States Patent no. 12,359,641, issued on July 15, was assigned to FETU Ltd. (Elland, Great Britain).

"Method and apparatus for a rotary thermodynamic cycle with substantially isobaric fluid admission" was invented by Jonathan Fenton (Cleckheaton, Great Britain).

According to the abstract* released by the U.S. Patent & Trademark Office: "A method of operating a thermodynamic apparatus configured as a heat engine or heat pump, the thermodynamic apparatus comprising, in flow series, a first heat exchanger, an expansion sub-chamber and a second heat exchanger, the method comprising transferring fluid from the first heat exchanger to the second heat exchanger via the expansion sub-chamber by: admitting a fluid...