ALEXANDRIA, Va., June 16 -- United States Patent no. 12,305,486, issued on May 20, was assigned to EnhancedGEO Holdings LLC (St. Petersburg, Fla.).

"Wellbore for extracting heat from magma bodies" was invented by Greg Lindberg (Thonotosassa, Fla.) and Kimberly C. Conner (Wetumpka, Ala.).

According to the abstract* released by the U.S. Patent & Trademark Office: "Wellbore for extracting heat from magma and a corresponding method. The method includes the steps of drilling a borehole from a surface and towards a magma chamber; supplying a drilling fluid to an interface between a drill bit and a terminal end of the borehole during drilling; terminating the drilling in response to the borehole achieving a predetermined depth; and supplying a t...