ALEXANDRIA, Va., Oct. 28 -- United States Patent no. 12,449,162, issued on Oct. 21, was assigned to IFP ENERGIES NOUVELLES (Rueil-Malmaison, France).

"System for heat exchange between a building and the earth's sub-soil comprising the circulation of phase change materials in a closed circuit" was invented by Isabelle Durand (Rueil-Malmaison, France), Habiba Boulharts (Rueil-Malmaison, France), Bernard Bourbiaux (Rueil-Malmaison, France), Vivien Esnault (Rueil-Malmaison, France), Jean-Francois Lecomte (Rueil-Malmaison, France), Vlasios Leontidis (Rueil-Malmaison, France), Marie Marsiglia (Rueil-Malmaison, France) and Elena Sanz (Rueil-Malmaison, France).

According to the abstract* released by the U.S. Patent & Trademark Office: "The presen...