ALEXANDRIA, Va., May 12 -- United States Patent no. 12,624,243, issued on May 12, was assigned to Hewlett-Packard Development Co. LP (Spring, Texas).
"Graft polyurethane copolymer dispersions" was invented by Zhang-Lin Zhou (San Diego), Yubai Bi (San Diego) and Qianhan Yang (San Diego).
According to the abstract* released by the U.S. Patent & Trademark Office: "A graft polyurethane copolymer dispersion can include dispersed polyurethane particles including a graft polyurethane copolymer. The graft polyurethane copolymer in this example includes a polyurethane backbone, a graft side-chain polymer attached to the polyurethane backbone, sulfonic acid groups, and isocyanate-generated amines. The graft side-chain polymer can include a poly(met...