ALEXANDRIA, Va., Feb. 19 -- United States Patent no. 12,228,480, issued on Feb. 18, was assigned to Revvity Health Sciences Inc. (Waltham, Mass.).
"Biological sample preparation using electric fields" was invented by Michael Nilsson (Mendon, Mass.) and Erhard Ralf Schoenbrunner (Charlestown, Mass.).
According to the abstract* released by the U.S. Patent & Trademark Office: "Systems and methods use electric fields to separate bioanalytes from a substrate comprising a biological sample. Biological material, especially blood samples, are sometimes dried onto absorbent substrates. By applying an electric field across the substrate, or a portion thereof, bioanalytes from the sample are attracted to a conductor having a positive or negative cha...