ALEXANDRIA, Va., Dec. 23 -- United States Patent no. 12,504,204, issued on Dec. 23, was assigned to EnhancedGEO Holdings LLC (St. Petersburg, Fla.).

"Partially cased wellbore in magma reservoir" 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: "A geothermal system may include a partially cased wellbore. The partially cased wellbore includes a first borehole portion extending from a surface into an underground magma reservoir. The first borehole portion includes a casing extending from a first end. The partially cased wellbore includes a second borehole portion extending from the first end to a terminal end of the wellbore....