ALEXANDRIA, Va., Nov. 18 -- United States Patent no. 12,472,468, issued on Nov. 18, was assigned to Purdue Research Foundation (West Lafayette, Ind.).
"Salinity gradient grade-scale energy storage method and apparatus" was invented by David Warsinger (West Lafayette, Ind.) and Sandra Cordoba (West Lafayette, Ind.).
According to the abstract* released by the U.S. Patent & Trademark Office: "A method of desalinating water, including the steps of when electricity costs between a first predetermined price and a second predetermined price, fill water is pumped into a reverse osmosis desalination unit to yield desalinated permeate and saltwater having a first salinity, when electricity costs less than the first predetermined price, fill water i...