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Expired Canadian patentCanada

Ad-hoc network and method of routing communications in a communication network

CA 2467387 C · Owner: Pereira, Luis R. · Inventors: Gutierrez, Jose A.; Pereira, Luis R.

CIPO record

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Abstract From the Canadian patent

An ad-hoc low rate - wireless personal area network (LR-WPAN) includes an ad-hoc network coordinator having a first processor a first memory, and a first communication interface; and a plurality of ad-hoc network devices. Each of the devices includes a second processor a second memory, and a second communication interface for communication with the first communication interface of the coordinator or with the second communication interface of another one of the devices. A simple low=cost, incremental source routing is employed. The first memory stores complete communication routes for messages from the coordinator through at least one of the devices to other devices. The second memory 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 May 17, 2004 and granted August 14, 2012. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended May 17, 2024.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 17, 2026.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledMay 17, 2004
GrantedAugust 14, 2012
Term endedMay 17, 2024
Patent numberCA 2467387 C
Classification (IPC)H04L45/00 +1 more

Timeline

Timeline From CIPO dates

2005200720092011201320152017201920212023Application filedMay 17, 2004Patent grantedAug 14, 2012Term endedMay 17, 2024

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