ALEXANDRIA, Va., Aug. 12 -- United States Patent no. 12,385,461, issued on Aug. 12.
"Combined system of gravitational potential energy and modulated buoyancy" was invented by Perry Mark Goldberg (Acton, Calif.).
According to the abstract* released by the U.S. Patent & Trademark Office: "A system for and method of utilizing phase-change devices at differing elevations to create lighter-than-air substances at the lower elevation to provide efficiencies in lifting objects to the higher elevation and/or to create heavier-than-air substances at the higher elevation to provide efficiencies when lowering objects to the lower elevation."
The patent was filed on Dec. 21, 2020, under Application No. 17/129,831.
*For further information, including...