ALEXANDRIA, Va., Oct. 21 -- United States Patent no. 12,767,897, issued on Oct. 20, was assigned to Baker Hughes Oilfield Operation LLC (Houston).

"Sulfur extraction from hydrocarbons using carbonate-based solvents" was invented by Sankaran Murugesan (Katy, Texas), Jerry J. Weers (Richmond, Texas), Sai Reddy Pinappu (Sugar Land, Texas), Onome Ugono (Rosenberg, Texas) and Kekeli A. Ekoue-Kovi (Rosenberg, Texas).

According to the abstract* released by the U.S. Patent & Trademark Office: "Non-acidic sulfur compounds (e.g., thiols) can be selectively extracted from a hydrocarbon stream containing them (e.g., crude oil) by contacting the hydrocarbon stream with a carbonate solvent that contains at least one organic carbonate (e.g., propylene c...