ALEXANDRIA, Va., Feb. 24 -- United States Patent no. 12,558,902, issued on Feb. 24, was assigned to Canon K.K. (Tokyo).
"Liquid injection method, liquid injection device, and liquid cartridge" was invented by Tatsuaki Orihara (Tokyo), Shinichi Sakurada (Tokyo), Nobuyuki Kuwabara (Tokyo) and Sachiko Yamauchi (Kanagawa, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "A liquid injection method of injecting a liquid from a liquid injector to a liquid cartridge including a liquid ejection head that ejects the liquid, a channel that is connected to the liquid ejection head and is capable of supplying the liquid to the liquid ejection head, and an opening portion that is connected to the channel and is provide...