ALEXANDRIA, Va., June 12 -- United States Patent no. 12,296,081, issued on May 13, was assigned to Fenwal Inc. (Lake Zurich, Ill.).

"Plasmapheresis methods" was invented by Kyungyoon Min (Kildeer, Ill.).

According to the abstract* released by the U.S. Patent & Trademark Office: "Methods and systems for the automated collection of plasma from a donor are disclosed. The methods and systems deliver anticoagulant to whole blood and/or to selected and separated components at selected times to provide a sufficient amount of anticoagulant to the selected components to prevent coagulation and/or flocculation. The methods and systems limit the amount of anticoagulant returned to the donor and maximize the amount of collected plasma. Methods and sy...