Digital secretary
CA 2172748 C · Owner: At&T Ipm Corp. · Inventors: Argade, Pramod Vasant
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A telephone answering machine (104) and method of use utilizes speech recognition (106) to identify a caller from a pre-defined list (111) of possible callers. The list may be generated by various input techniques including a spoken voice at, the called party's location and keyboard or graphical input techniques. If the caller is identified as being on the list (203) the machine allows the call to progress along a first sequence, which includes ringing the called phone (204). If the called phone does not answer (205), the first sequence may provide for responding with a customized message (212) for the calling party. If the caller is not identified as being on the list, the machine allows …
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 March 27, 1996 and granted July 27, 1999. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended March 27, 2016.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 27, 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.