ALEXANDRIA, Va., March 19 -- United States Patent no. 12,253,285, issued on March 18, was assigned to Power8 Tech. Inc. (Los Gatos, Calif.).
"Geothermal energy storage and conversion systems and methods" was invented by Lien Chun Ding (Taoyuan, Taiwan) and Chih Cheng Tai (Campbell, Calif.).
According to the abstract* released by the U.S. Patent & Trademark Office: "A geothermal energy storage/converting system utilizes hot water and pressure, such as steam, generated by the geothermal heat/ground water to store energy and/or generate electricity. The system utilizes a motion of a piston, driven by steam generated by geothermal heat, to control movement of an amount of water, which is used to store the energy by compressing gas as energy s...