ALEXANDRIA, Va., Aug. 5 -- United States Patent no. 12,697,819, issued on Aug. 4, was assigned to DIC Corp. (Tokyo).
"Pigment dispersion for ink jet ink, ink jet ink, and printed matter" was invented by Naruhito Suzuki (Sakura, Japan), Takashi Nishijima (Sakura, Japan), Minoru Shigemori (Sakura, Japan) and Iwao Hattori (Sakura, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "The present invention relates to a pigment dispersion for ink jet ink, including a binder (A), a pigment (B), and an aqueous medium (C). The pigment dispersion is characterized in that the binder (A) is a binder containing a urethane resin (A1) which is a reaction product of polyol (a1), containing polyol (a1-1) having an acid group...