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Canadian application, no grantCanada

Method of determining a spectral route for a given connection in an optical telecommunication network and nod for delivering the method

CA 2474644 A1 · Owner: Alcatel · Inventors: Douville, Richard; Dotaro, Emmanuel; Ciavaglia, Laurent

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

The invention relates to a method of determining a spectral route for a given connection in an optical telecommunication network (T) between a start node (ON1) and an end node (ON6) of said network. The inventive method consists in: using a standard routing method to determine one or more spatial candidate routes (Route 1 Route 2) which connect the start node (ON1) and the end node (ON6) whereby each spatial candidate route (i) comprises a series of route segments which each link two network nodes directly and (ii) can support several spectral routes; sending a route establishment request message from the start node (ON1) to the end node (ON6); collecting values of parameters from this …

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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 February 21, 2002. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended February 21, 2022.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by February 21, 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.
FiledFebruary 21, 2002
GrantedNo grant recorded
Term endedFebruary 21, 2022
Patent numberCA 2474644 A1
Classification (IPC)H04J14/02 +2 more

Timeline

Timeline From CIPO dates

2003200520072009201120132015201720192021Application filedFeb 21, 2002Term endedFeb 21, 2022

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