ALEXANDRIA, Va., Nov. 18 -- United States Patent no. 12,473,488, issued on Nov. 18, was assigned to Canon K.K. (Tokyo).
"Aqueous liquid composition and aqueous ink" was invented by Takayuki Horiuchi (Kawasaki, Japan) and Naofumi Shimomura (Kawasaki, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "A liquid composition that is an aqueous liquid composition that emits light when irradiated with ultraviolet light contains a resin particle, the resin particle containing a unit that has a polar group and containing a complex composed of a sulfur-bridged calixarene and a lanthanoid ion, the polar group being at least one selected from the group consisting of an ester group, a carboxy group, a hydroxy group, an...