ALEXANDRIA, Va., Jan. 13 -- United States Patent no. 12,523,591, issued on Jan. 13, was assigned to Iris International Inc. (Chatsworth, Calif.).

"Dynamic range extension systems and methods for particle analysis in blood samples" was invented by Thomas H. Adams (Leucadia, Calif.), Bart J. Wanders (Coto de Caza, Calif.), John Roche (Scarborough, Maine) and Harvey L. Kasdan (Jerusalem).

According to the abstract* released by the U.S. Patent & Trademark Office: "For analyzing a sample containing particles of at least two categories, such as a sample containing blood cells, a particle counter subject to a detection limit is coupled with an analyzer capable of discerning particle number ratios, such as a visual analyzer, and a processor. A fi...