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Expired Canadian patentCanada

Methods and apparatus for using location information to manage spillover in an audience monitoring system

CA 2581982 C · Owner: Nelson, Dan · Inventors: Headley, Weston P.; Lee, Morris; Nelson, Dan

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Abstract From the Canadian patent

Methods, apparatus, and articles of manufacture for using location information to manage spillover in an audience monitoring system are disclosed. In particular, the example methods, apparatus and articles of manufacture detect , spillover to generate media monitoring information. Initially a first sensor , located in a first location and a second sensor located in a second location receive a portable metering device signal. First location information is then associated with receiving the portable metering device signal via the first sensor and second location information is associated with receiving the portable metering device signal via the second sensor. Media monitoring …

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Listed from its CIPO record in Patent Yard's archive of Canadian patents past their term. Its claims, description and drawings are in the CIPO record and on Google Patents, and the Claude kit works from them.

Why it's free to use

  • Filed September 27, 2005 and granted June 18, 2013. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended September 27, 2025.
  • Certificates of supplementary protection extend only drug patents, and it isn't classified as one.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledSeptember 27, 2005
GrantedJune 18, 2013
Term endedSeptember 27, 2025
Patent numberCA 2581982 C
Classification (IPC)H04H60/52 +1 more

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2006200820102012201420162018202020222024Application filedSep 27, 2005Patent grantedJune 18, 2013Term endedSep 27, 2025

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