ALEXANDRIA, Va., Oct. 28 -- United States Patent no. 12,448,571, issued on Oct. 21, was assigned to KAO Corp. (Tokyo).
"Aqueous microcapsule dispersion" was invented by Daisuke Yamazaki (Wakayama, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "The invention relates to [1] an aqueous microcapsule dispersion containing a component (A): microcapsules each having a shell and a core containing at least one organic compound inside the shell, and a component (B): a surfactant containing a quaternary ammonium salt compound represented by the general formula (1), wherein the ratio by mass of the content of the component (A) to the content of the component (B) [component (A)/component (B)] is 0.1 or more and 20 ...