ALEXANDRIA, Va., Oct. 28 -- United States Patent no. 12,453,968, issued on Oct. 28, was assigned to New Orleans (La.).

"Apparatus and methods for separating blood components" was invented by Randy Dorian (San Diego), Michael D. Leach (Warsaw, Ind.), Richard W. Storrs (Berkeley, Calif.) and Scott R. King (New Orleans).

According to the abstract* released by the U.S. Patent & Trademark Office: "Apparatus and methods for separating blood components are disclosed in which an apparatus for separating blood generally includes a tube defining a channel and configured for receiving a quantity of blood and a float contained within the tube and having a density which is predefined so that the float is maintained at equilibrium between a first layer...