ALEXANDRIA, Va., March 17 -- United States Patent no. 12,578,124, issued on March 17, was assigned to WaterFurnace International Inc. (Fort Wayne, Ind.).

"Integrated demand water heating using a capacity modulated heat pump with desuperheater" was invented by Robert R. Brown (Markle, Ind.).

According to the abstract* released by the U.S. Patent & Trademark Office: "A heat pump system provides at least six modes of heating, cooling, and/or domestic water heating operation, where domestic water heating may occur concurrently with heating or cooling a space in a structure. The heat pump system comprises a desuperheater positioned downstream of the compressor and operable as a desuperheater, a condenser or an evaporator, a source heat exchang...