Telephone call on hold service for a party placed on hold by another party
CA 2210082 C · Owner: Ag Communication Systems Corporation · Inventors: Farfan, Daniel J.; Dobrovich, Richard J.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An on hold telephony service that allows a party placed on hold, if he is a subscriber to the service to, also place the call on hold and then hang up. 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 party placed on hold, i.e. subscriber, through a transfer function that causes the call to be maintained by the on hold service. When the party who originally placed the call on hold returns to the call, the on hold service informs him that the service will then call the subscriber so that both parties can be reconnected.
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 December 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.