ALEXANDRIA, Va., June 19 -- United States Patent no. 12,331,205, issued on June 17, was assigned to KAO Corp. (Tokyo).
"Resin particle dispersion" was invented by Takahiro Sato (Wakayama, Japan) and Hirotaka Takeno (Wakayama, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "A resin particle dispersion containing core/shell-type resin particles and water is described. A shell portion resin of the core/shell-type resin particles contains a constitutional unit derived from a (meth)acrylic acid ester containing a hydrocarbon group having from 4 to 8 carbon atoms. A core portion resin of the core/shell-type resin particles contains a constitutional unit derived from a (meth)acrylamide-based monomer whose solu...