ALEXANDRIA, Va., Nov. 6 -- United States Patent no. 12,458,916, issued on Nov. 4, was assigned to Teijin Pharma Ltd. (Tokyo).
"Oxygen concentration device" was invented by Yuichi Hirai (Tokyo) and Akinobu Muramoto (Tokyo).
According to the abstract* released by the U.S. Patent & Trademark Office: "Provided is an oxygen concentration device that can facilitate easy and secure replacement work, such as attaching and detaching the adsorption cylinder while reducing the force applied from the oxygen concentration device body to the adsorption cylinder cartridge in the direction of detaching and thus ensuring the connection with the oxygen concentration device, wherein the axis line of the gas flow direction of the adsorption cylinder intersec...