ALEXANDRIA, Va., Dec. 16 -- United States Patent no. 12,498,417, issued on Dec. 16, was assigned to TECHINSIGHTS INC. (Ottawa).

"Contrast-enhancing staining system and method and imaging methods and systems related thereto" was invented by Christopher Pawlowicz (Ottawa) and Spyridon Ntais (Ottawa).

According to the abstract* released by the U.S. Patent & Trademark Office: "Described are various embodiments of a contrast-enhancing staining system and method. In one embodiment, a method is described for enhancing contrast in an image of a substrate surface between regions of said substrate having different charge carrier characteristics. The method comprises exposing said substrate to a staining precursor comprising an oxidant; directing mi...