ALEXANDRIA, Va., Dec. 16 -- United States Patent no. 12,497,481, issued on Dec. 16, was assigned to Agfa NV (Mortsel, Belgium).
"Aqueous cationic polyurethane dispersions" was invented by Hubertus Van Aert (Mortsel, Belgium), Johan Loccufier (Mortsel, Belgium), Marie Lehericey (Mortsel, Belgium) and Mei-Yuan Hsu (Mortsel, Belgium).
According to the abstract* released by the U.S. Patent & Trademark Office: "An aqueous polyurethane resin dispersion, the polyurethane resin having a polyalkylene oxide in a side chain thereof and is obtainable by reacting in an organic solvent, a polyisocyanate with a 1,2 or 1,3 polyether diol and with a polymeric diol selected from the group consisting of polyester diol, polyether diol, polycarbonate diol, po...