Automatic call-back system and method
CA 2192259 C · Owner: Sahni, Paramdeep Singh · Inventors: Sahni, Paramdeep Singh; Jain, Ajay
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A system and method are disclosed for providing an automatic call-back when a calling party encounters a ring-no-answer condition upon calling a called party. An exemplary system includes: a first originating switch node (OSN) coupled to a first originating telephone call location corresponding to a calling party and a terminating switch node (TSN) coupled to a destination telephone call location corresponding to a called party; a database coupled to the TSN for storing the called party's calling activity; a processor coupled to the TSN for processing the calling activity to determine a best time to call (BTTC) the called party (wherein the BTTC comprises a best exact time and/or a window …
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 December 6, 1996 and granted August 1, 2000. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended December 6, 2016.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 6, 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.