ALEXANDRIA, Va., June 6 -- United States Patent no. 12,281,281, issued on April 22, was assigned to Cargill Inc. (Wayzata, Minn.).

"Edible oil refining" was invented by Michael Maiworm (Hamburg, Germany) and Armin Willem-Friedrich Hermann Tarnow (Rotterdam, Niger).

According to the abstract* released by the U.S. Patent & Trademark Office: "The present invention relates to an oil refining equipment comprising a stripping column with packing and the column has a height to diameter ratio from 0.1 to 10, from 0.5 to 5, from 1 to 4.9, from 1.4 to 4.5, from 1.6 to 2.8. It is used for degrading, decomposing or breaking down oxidation products of triglycerides, diglycerides, monoglycerides and/or fatty acids. A process for refining edible oils is...