ALEXANDRIA, Va., June 10 -- United States Patent no. 12,291,034, issued on May 6, was assigned to Seiko Epson Corp. (Tokyo).

"Liquid ejection apparatus and agitation method for liquid ejection apparatus" was invented by Tomohiro Kawasaki (Shiojiri, Japan) and Hiromichi Takanashi (Shiojiri, Japan).

According to the abstract* released by the U.S. Patent & Trademark Office: "The liquid ejection apparatus includes a liquid ejection head, a cap having a closed space forming section forming a closed space, an inflow port through which a humidification fluid flows in, and an outflow port through which the humidification fluid flows out, a humidification fluid storage section storing the humidification fluid, a supply flow path communicating the ...