ALEXANDRIA, Va., Nov. 6 -- United States Patent no. 12,464,200, issued on Nov. 4, was assigned to The Nielsen Co. (US) LLC (New York).

"Apparatus and methods to associate different watermarks detected in media" was invented by Christen V. Nielsen (Palm Harbor, Fla.), David Gish (Riverdale, N.J.), Ken Joseph Frett (Tampa, Fla.), Timothy Scott Cooper (Oldsmar, Fla.) and Alexander Topchy (New Port Richey, Fla.).

According to the abstract* released by the U.S. Patent & Trademark Office: "Methods, apparatus, systems and articles of manufacture are disclosed for associating different watermarks detected in media. An example method disclosed herein includes determining whether a first watermark detected in a media signal is represented in a wate...