ALEXANDRIA, Va., Jan. 28 -- United States Patent no. 12,534,663, issued on Jan. 27, was assigned to The Curators of the University of Missouri (Columbia, Mo.).

"Re-crosslinkable hyper-branched polymer gels based on a transamidation reaction" was invented by Tao Song (Rolla, Mo.), Baojun Bai (Rolla, Mo.) and Thomas P. Schuman (Rolla, Mo.).

According to the abstract* released by the U.S. Patent & Trademark Office: "The present invention generally relates to the field of conformance control in oil fields, particularly to a re-crosslinkable preformed particle gel system, and composition thereof. The composition of the re-crosslinkable preformed particle gel system contains monomers, crosslinkers, a polymer matrix, and additives. Components in...