ALEXANDRIA, Va., Oct. 28 -- United States Patent no. 12,447,749, issued on Oct. 21, was assigned to SEIKO EPSON Corp. (Tokyo).
"Ink refill container" was invented by Tadahiro Mizutani (Shiojiri, Japan) and Yoshihiro Koizumi (Shiojiri, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "An ink refill container includes: a container body portion; an ink-outlet forming portion coupled to the container body portion and including a cylindrical portion having an ink outlet; a sealing member provided in the cylindrical portion and having an opening that enables insertion and removal of an ink introduction conduit; a valve member provided to be configured to come into contact with the sealing member; a spring membe...