Systems and methods for audience monitoring
CA 2298569 C · Owner: Klosterman, Brian L. · Inventors: O'Connor, Daniel C.; Hancock, Kenneth S.; Hugon, Jacques L.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A method of acquiring television viewer interaction data the method, comprising monitoring usage of a television input device producing viewer, interaction data representing viewer interaction with a television controlled by, the television input device in response to usage of the television input device, encoding the viewer interaction data to produce encoded viewer interaction data for transmission to a central location accessing the viewer interaction, data for transmission to the central location in response to input received from, the television input device, and causing the television to emit sounds representing the encoded viewer interaction data for reception by a telephone, …
Read the whole patent
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 July 30, 1998 and granted November 4, 2003. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended July 30, 2018.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 30, 2020.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Timeline
Timeline From CIPO dates
Sources & verification
Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.