ALEXANDRIA, Va., Oct. 28 -- United States Patent no. 12,454,681, issued on Oct. 28, was assigned to I Peace Inc. (Palo Alto, Calif.).

"Erythrocyte removal device, mononuclear cell collector, cell culture device, cell culture system, cell culture method, and mononuclear cell collection method" was invented by Koji Tanabe (Palo Alto, Calif.), Ryoji Hiraide (Kyoto, Japan) and Kenta Suto (Palo Alto, Calif.).

According to the abstract* released by the U.S. Patent & Trademark Office: "Provided is a cell culture method including introducing a factor into cells in a cell culture vessel, and culturing the cells into which the factor has been introduced in the same cell culture vessel. Also provided is a mononuclear cell collection method including...