US Patent Issued to DIC on March 17 for "Pigment composition, coloring agent, and inkjet ink" (Japanese, Chinese Inventors)

ALEXANDRIA, Va., March 17 -- United States Patent no. 12,577,420, issued on March 17, was assigned to DIC Corp. (Tokyo).

"Pigment composition, coloring agent, and inkjet ink" was invented by Shogo Yamada (Kamisu, Japan), Yukiko Higuchi (Kamisu, Japan), Akira Kimura (Kamisu, Japan), Xia Yang (Qingdao, China) and Wei Zhao (Qingdao, China).

According to the abstract* released by the U.S. Patent & Trademark Office: "An object of the present invention is to provide a pigment composition that is suitable as an IJ ink and has high dispersion stability and excellent storage stability, a coloring agent containing the pigment composition, and, in particular, an IJ ink. The pigment composition of the present invention contains a quinacridone pigment...