Programmable radio subscription system for receiving selectively defined information
CA 2212762 C · Owner: Sturm, Walter · Inventors: Sturm, Walter; Silverman, David Phillip; Goldman, Shelley B.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The radio subscription system of the present invention enables a subscriber to remotely define and identify one or more playlists each specifying information content selected by the subscriber from a subscription content database for later transmission to the subscriber's radio. The radio subscription system also permits the subscriber to use the local subscriber radio to remotely request transmission of a particular playlist to the subscriber's radio for storage and playback. The subscriber may then use the local subscriber radio to playback the particular playlist.
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 August 12, 1997 and granted November 14, 2000. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended August 12, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by August 12, 2019.
- 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.