ALEXANDRIA, Va., Sept. 3 -- United States Patent no. 12,405,272, issued on Sept. 2, was assigned to SPD Swiss Precision Diagnostics GMBH (Geneva).
"Assay device" was invented by Catherine Ungeprapakorn (Geneva), Stephen Carlisle (Geneva) and Balbir Raj (Geneva).
According to the abstract* released by the U.S. Patent & Trademark Office: "The present invention provides assay devices and methods for detecting the presence of an analyte in a sample. Devices according to the invention include a reagent zone, one or more capture zones and a detection zone. Capture zones can reduce the quantity of labelled conjugate that reaches the detection zone in the presence of a negative marker in the sample and/or in the absence of a positive marker in th...