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Expired Canadian patentCanada

Congestion handling in a packet communication system

CA 2554416 C · Owner: Dianda, Robert B. · Inventors: Brown, Jack E.; Dianda, Robert B.; Bugenhagen, Michael K.

CIPO record

Overview

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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 packet communication system (300) is disclosed that includes an end communication device (302), a call processing system (306) and a packet , network (304). To setup up a call from an end user the end communication , device (302) transmits a call request message to the call processing system (306). The call request message has a header that includes priority information for the call. The call processing system (306) processes the priority information in the header of the call request message to determine if the call request message is for a high priority call. If the call request message is not for a high priority call and the call processing system (306) is in a state of …

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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 January 25, 2005 and granted September 4, 2012. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended January 25, 2025.
  • Certificates of supplementary protection extend only drug patents, and it isn't classified as one.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledJanuary 25, 2005
GrantedSeptember 4, 2012
Term endedJanuary 25, 2025
Patent numberCA 2554416 C
Classification (IPC)H04L65/10 +2 more

Timeline

Timeline From CIPO dates

2006200820102012201420162018202020222024Application filedJan 25, 2005Patent grantedSep 4, 2012Term endedJan 25, 2025

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