ALEXANDRIA, Va., Dec. 31 -- United States Patent no. 12,509,600, issued on Dec. 30, was assigned to SAKATA INX Corp. (Osaka, Japan).
"Photocurable inkjet printing ink composition" was invented by Okinori Nakashima (Osaka, Japan), Ryoichi Nitta (Osaka, Japan) and Koki Ogasahara (Osaka, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "A photocurable inkjet printing ink composition satisfies requirements A to F: A: the total content of compounds selected from vinyl methyl oxazolidinone, N,N-dimethylacrylamide, benzyl acrylate, and N-vinylcaprolactam, is 30.0% by mass or higher; B: the total content of compounds selected from saturated hydrocarbon group-containing monofunctional monomers with 6 or more carbo...