Method and apparatus for providing a caller id alias
CA 2215819 C · Owner: At&T Wireless Services, Inc. · Inventors: Rhodes, Jeffrey
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A method and apparatus provide the capability of presenting alias information in place of public name information to support caller ID services. A calling party name database is modified to include alias information. The terminating local exchange carrier queries the network for calling party information. The appropriate information field within the database is accessed based on an indication of whether the calling party is selecting the public name or the alias information to be provided to the called party.
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 September 19, 1997 and granted January 1, 2002. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended September 19, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by September 19, 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.