Calling number identification using speech recognition
CA 2115875 C · Owner: Lee, Dooyong · Inventors: Lee, Dooyong
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
In a system such as an AUDIX~ voice mail system or answering machine, a caller's telephone number is extracted from a recorded message using voice recognition. The called party initiates automatic dialing of the calling party's number after confirming that the number was correctly recognized by the system.
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 February 17, 1994 and granted June 16, 1998. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended February 17, 2014.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by February 17, 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.