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Expired Canadian patentCanada

System and method for capacity management in multi-service networks

CA 2191375 C · Owner: At&T Corp. · Inventors: Maxemchuk, Nicholas Frank

CIPO record

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

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Abstract From the Canadian patent

A methodology for allocation of transmission capacity in communications networks is provided wherein a collection of constant rate channels is implemented between end points in the network. In that methodology periodic sources are assigned, channels of bandwidth corresponding to the transmission rate for each such source and, bursty sources are assigned to channels providing bandwidth corresponding to a minimum service guarantee for each such bursty source. Channel capacity assigned to periodic services which is not needed by such sources is then made available to bursty sources for accommodating capacity requirements of such bursty sources over and above the minimum service guarantee.

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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 November 27, 1996 and granted July 3, 2001. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended November 27, 2016.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 27, 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.
FiledNovember 27, 1996
GrantedJuly 3, 2001
Term endedNovember 27, 2016
Patent numberCA 2191375 C
Classification (IPC)H04L47/24 +2 more

Timeline

Timeline From CIPO dates

1997199920012003200520072009201120132015Application filedNov 27, 1996Patent grantedJuly 3, 2001Term endedNov 27, 2016

Sources & verification

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