ALEXANDRIA, Va., Feb. 19 -- United States Patent no. 12,228,482, issued on Feb. 18.
"Devices and methods for overlaying blood or cellular suspensions" was invented by Jae Go Kwon (Thousand Oaks, Calif.).
According to the abstract* released by the U.S. Patent & Trademark Office: "A device is described that overlays a first fluid, such as blood or a cellular suspension onto a base material, such as a density gradient. In some embodiments, the fluid layering device includes a cylindrical reservoir, a fluid barrier, a coupling extension, a plunger, and an exhaust vent. The fluid layering device can be coupled through its coupling extension to an open end of a container, such as a conical centrifuge tube, including the density gradient. Once a...