ALEXANDRIA, Va., Dec. 9 -- United States Patent no. 12,491,751, issued on Dec. 9, was assigned to DENSO International America Inc. (Southfield, Mich.) and DENSO Corp. (Kariya, Japan).

"HVAC system" was invented by Dwayne Taylor (Livonia, Mich.), Matt Filipkowski (Lake Orion, Mich.), Mika Gocho (Ann Arbor, Mich.), Aaron Compton (Pinckney, Mich.), Brian Belanger (Rochester Hills, Mich.) and Jonathan Noah-Navarro (Royal Oak, Mich.).

According to the abstract* released by the U.S. Patent & Trademark Office: "An HVAC system including an evaporator, a condenser, an expansion valve, and a compressor. An HVAC case includes a first heat exchanger having a first height, a second heat exchanger having a second height that is greater than the first h...