ALEXANDRIA, Va., June 16 -- United States Patent no. 12,654,148, issued on June 16, was assigned to Active Minerals International LLC (Sparks, Md.).
"Thermally activated bleaching clay product for oil bleaching" was invented by Bo Wang (Union City, Calif.), Scott Kevin Palm (Reno, Nev.) and Dennis Parker (Victor, Idaho).
According to the abstract* released by the U.S. Patent & Trademark Office: "A product, a method of producing and a method of using are disclosed. The product comprises attapulgite that has been thermally activated. The product may have a permeability in oil in the range of 0.04-3 darcy and may have a surface area of 45-140 m2/g. The method of producing may comprise thermally activating a material that includes attapulgite...