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Expired Canadian patentCanada

An improved access to telecommunications networks in multiservice environment

CA 2227474 C · Owner: Bell-Northern Research Ltd. · Inventors: Focsaneanu, Mihai; Livermore, Frederick Caldwell; Skillen, Richard Prescott

CIPO record

Overview

Drawings and full text

Its claims, description and drawings are in the Canadian Patents Database.

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Abstract From the Canadian patent

In current voice telephony, CATV, and wireless networks traffic is , channelized for both access and transport. This channelization is wasteful of resources where multiple services have varying demands for bandwidth and holding times, or a service generates traffic that is bursty in nature. The invention solves these problems by providing flexible and adaptable multiservice access to the networks. Customer requirements are checked by monitoring traffic on a local access at a connection request and/or during the established connection, and the local access is configured according to the transmission requirements. The local access can also be configured in response to the network …

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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 10, 1996 and granted May 21, 2002. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended July 10, 2016.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 10, 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.
FiledJuly 10, 1996
GrantedMay 21, 2002
Term endedJuly 10, 2016
Patent numberCA 2227474 C
Classification (IPC)H04L12/64 +2 more

Timeline

Timeline From CIPO dates

1997199920012003200520072009201120132015Application filedJuly 10, 1996Patent grantedMay 21, 2002Term endedJuly 10, 2016

Sources & verification

Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.