Telephony based delivery system of messages containing selected greetings
CA 2220945 C · Owner: De Silva, Suran Sam · Inventors: Brett, Michael Edward; Nakatsu, Kenneth Tsutomu; Love, William Gerald
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention constitutes a telephony based electronic voice greeting card service embodied within an adjunct processing system (12) communicatively connected to a toll switching office (26) of a public switched telephone network (10). The voice card system (12) comprises a service controller (14) a storage node (28), an attendant controller (16) and attendant services (18). The service controller (14) is responsible for automatic processing of incoming and outgoing calls to provide the functionality for capturing new voice card messages, delivering voice card messages and status query of previously captured messages. The storage node (28) provides a database of captured voice card …
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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 April 10, 1996 and granted October 24, 2000. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended April 10, 2016.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 10, 2018.
- 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.