Portable telephone user profiles using central computer
CA 2100699 C · Owner: Letkeman, Kim D. · Inventors: Letkeman, Kim D.; Pinard, Deborah L.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A method of invoking a telephone user profile comprised of storing in a database a user telephone service profile containing a directory number of a user in association with a telephone set line transmitting, the user telephone service profile to a central computer, transmitting the service profile to a group of telephone office switches from the computer storing the, service profile at each of the telephone office switches in the group, and providing service to the user at each of the telephone office switches in the group in accordance with the service profile.
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 16, 1993 and granted July 8, 1997. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended July 16, 2013.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 16, 2015.
- 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.