Isn call interrupt
CA 2449703 A1 · Owner: Worldcom, Inc. · Inventors: Marchand, Dean C.; Cahill, Jeffrey D.; Springer, Arthur Lance
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A device and method of intercepting in-progress calls whose billing numbers have been marked fraudulent subsequent to the initial authorization and validation of the same in-progress calls. The device and method uses criteria to define certain calls as "suspect" and parks all suspect calls after the initial call processing. Because the suspect calls are parked and not released to the general switching elements of the telephone network the suspect calls , can be torn down if the associated billing number is marked fraudulent after call processing. The criteria can maintain a fine granularity by using various Call Park Flags in various databases. In addition the suspect calls can , …
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 June 5, 2002. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended June 5, 2022.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 5, 2024.
- 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.