ALEXANDRIA, Va., May 26 -- United States Patent no. 12,641,306, issued on May 26, was assigned to The Nielsen Co. (US) LLC (New York).

"Methods, apparatus, and articles of manufacture to determine whether audience measurement meters are co-located" was invented by Alexander Topchy (New Port Richey, Fla.), Ronny Lerch (San Antonio, Fla.), John Stavropoulos (Edison, N.J.) and David Gish (Riverdale, N.J.).

According to the abstract* released by the U.S. Patent & Trademark Office: "Methods, apparatus, systems, and articles of manufacture are disclosed to determine whether audience measurement meters are co-located. An example apparatus is to, based on a difference between a first sampling time of a first entry of a first log and a second samp...