Interactive program guide technique
CA 2301238 A1 · Owner: At&T Corp. · Inventors: Gilboy, Christopher P.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A viewer may enjoy viewing a program listing that indicates viewer preferences obtained by monitoring the viewer's viewing habits. For each program viewed at least, two characteristics of the program (e.g. viewing duration viewing frequency , and, program content) are monitored and if at least one characteristic meets a prescribed, threshold, the identity of the program whose characteristic met the prescribed threshold is, recorded. The recorded program preferences are employed to create a filter for application on a standard program listing to create a listing identifying user preferences.
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 March 15, 2000. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended March 15, 2020.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 15, 2022.
- 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.