Personalized information service system
CA 2128306 C · Owner: Fahrer, Harold · Inventors: Fahrer, Harold; Davenport, Esther Lee; Backaus, Marjorie Susan
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A high-speed information service system is provided which uses a unique identifier received during call setup to retrieve automatically a personalized profile for an information service subscriber. The identifier uniquely identifies the subscriber thereby allowing the, information retrieval process to begin immediately after the call is setup. The system utilizes Integrated Services Digital Networks (ISDN) signaling and temporary "out-of-band" signaling, to improve information retrieval capability. ISDN signaling permits electronic addressing of information requested by the subscriber thereby eliminating the delays which accompany DTMF signal processing. Communications between an …
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 18, 1994 and granted December 15, 1998. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended July 18, 2014.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 18, 2016.
- 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.