Information on hold telephony service
CA 2210075 C · Owner: Farfan, Daniel J. · Inventors: Farfan, Daniel J.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An on hold telephone service that allows a subscriber to the service to place a call on hold and make information services available to the party placed on hold. The on hold service can be implemented on a central office switch or an enhanced services platform connected to the switch. The on hold service is accessed by the subscriber to the service through a transfer function that causes the call to be maintained by the on hold service. The party so placed on hold by the subscriber can then interactively acquire the various types of information made available by the service such as news, weather and stock market information. The subscriber to the service can then send a message to the other …
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 10, 1997 and granted September 30, 2003. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended July 10, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 10, 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.