ALEXANDRIA, Va., Feb. 11 -- United States Patent no. 12,546,797, issued on Feb. 10, was assigned to Becton Dickinson and Co. (Franklin Lakes, N.J.).

"Flow cytometers including sample injection needles, and methods of use thereof" was invented by Kyle Dembski (Scotts Valley, Calif.) and Pierce O. Norton (Los Gatos, Calif.).

According to the abstract* released by the U.S. Patent & Trademark Office: "Flow cytometers having sample injection needles are provided. The subject flow cytometers include a flow cell for transporting particles in a core stream of a flow stream from a proximal end to a distal end, and a sample injection needle having a passage running therethrough for delivering sample fluid from a sample injection line at a proximal ...