ALEXANDRIA, Va., Nov. 18 -- United States Patent no. 12,473,482, issued on Nov. 18, was assigned to The Curators of the University of Missouri (Columbia, Mo.).
"Nontoxic high temperature resistant hydrogels" was invented by Thomas P. Schuman (Rolla, Mo.), Baojun Bai (Rolla, Mo.) and Buddhabhushan Pundlik Salunkhe (Rolla, Mo.).
According to the abstract* released by the U.S. Patent & Trademark Office: "Compositions of swellable non-toxic hydrogels and their use in conformance control are described herein. More specifically, the present invention generally relates to the hydrogels compositions that can be used to treat the oil reservoirs having high temperature and high salinity conditions. The compositions generally comprise a plurality of...