ALEXANDRIA, Va., Aug. 5 -- United States Patent no. 12,698,413, issued on Aug. 4, was assigned to Covestro Deutschland AG (Leverkusen, Germany).
"Aqueous polyurethane-urea dispersion" was invented by Yingdan Zhu (Shanghai), Huimin Ye (Shanghai), Shifeng Tang (Shanghai), Mingming Yu (Shanghai), Yuan Li (Shanghai), Hongliang Song (Shanghai) and Changjing Jiang (Shanghai).
According to the abstract* released by the U.S. Patent & Trademark Office: "The present invention relates to an aqueous polyurethane-urea dispersion including polyurethane-urea and a preparation method and use thereof, especially in the field of coating compositions, binders or inks, and a product obtained by coating, bonding, sealing or printing with the aqueous polyureth...