Technique for making rewards available for an audience tuned to a broadcast
CA 2512221 C · Owner: Weinblatt, Lee S. · Inventors: Weinblatt, Lee S.; Langer, Thomas
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A technique for enabling access to supplementary materials related to a program that is broadcast to a plurality of audience members. A programming signal is obtained to be used for performing the program. A supplementary material ID signal is obtained that uniquely identifies particular program-related supplementary material from among a plurality of available program-related supplementary materials but which does not include sufficient data for printing and/or displaying such particular program- related supplementary material. The programming signal and the supplementary material ID signal are combined into an output signal that is broadcast from a broadcast signal source. At a location …
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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 July 14, 2005 and granted March 15, 2016. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended July 14, 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.
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.