ALEXANDRIA, Va., Aug. 20 -- United States Patent no. 12,391,867, issued on Aug. 19, was assigned to CHEVRON ORONITE COMPANY LLC (San Ramon, Calif.) and Chevron U.S.A. Inc. (San Ramon, Calif.).
"Olefin sulfonates" was invented by Andrew M. Thomas (El Sobrante, Calif.), Curtis B. Campbell (Hercules, Calif.), Gayani W. Pinnawala (Katy, Texas), Varadarajan Dwarakanath (Houston), Andrew M. Davidson (San Ramon, Calif.) and Ping Wang (Fremont, Calif.).
According to the abstract* released by the U.S. Patent & Trademark Office: "The present disclosure is directed to surfactants (in particular olefin sulfonates), surfactant packages, compositions derived thereof, and uses thereof in hydrocarbon recovery. Methods of making olefin sulfonate surfactan...