US Patent Issued to DIC on July 14 for "Disazo pigment, pigment composition, and printing ink" (Chinese, Japanese Inventors)

ALEXANDRIA, Va., July 14 -- United States Patent no. 12,679,977, issued on July 14, was assigned to DIC Corp. (Tokyo).

"Disazo pigment, pigment composition, and printing ink" was invented by Shumei Ji (Qingdao, China), Issei Masuko (Kamisu, Japan), Masaki Hosaka (Kamisu, Japan), Kyoichi Okada (Kamisu, Japan), Nagatoshi Kobayashi (Kamisu, Japan), Xiyang Liao (Qingdao, China) and Wei Zhao (Qingdao, China).

According to the abstract* released by the U.S. Patent & Trademark Office: "The issue of the present invention is to provide a disazo pigment with high safety in which the content of chemical substances that may be harmful, in particular, in the food packaging field and the like and that may be regulated substances is reduced. A disazo pi...