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Expired Canadian patentCanada

Adaptive channel allocation system for communication network

CA 2221402 C · Owner: Ramakrishnan, Kadangode K. · Inventors: Ramakrishnan, Kadangode K.; Mishra, Partho Pratim

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

An adaptive channel allocation system is provided which monitors the actual channel bandwidth used by network sources. Sources which have placed demands for network bandwidth, but not used that bandwidth have their, channel resources down-allocated according to a smoothed exponential function. Sources which are idle are detected by means of an aging function.

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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 18, 1997 and granted March 18, 2003. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended November 18, 2017.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 18, 2019.
  • 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 18, 1997
GrantedMarch 18, 2003
Term endedNovember 18, 2017
Patent numberCA 2221402 C
Classification (IPC)H04L47/70 +2 more

Timeline

Timeline From CIPO dates

1998200020022004200620082010201220142016Application filedNov 18, 1997Patent grantedMarch 18, 2003Term endedNov 18, 2017

Sources & verification

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