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Canadian application, no grantCanada

Network and protocols for group multicasting

CA 2337600 A1 · Owner: Yener, Bulent · Inventors: Yener, Bulent; Chen, Shiwen

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 group multicasting network comprises a plurality of ring networks interconnected by a tree network. The rings which include multicast group, members are connected at the leaf nodes of the tree via bridge nodes. Ring nodes, perform a ring-based multicast protocol and the tree nodes perform a treebased, multicast protocol. The bridge nodes act as intermediaries between the ring networks and the tree network and as such perform both the ring-based , multicast protocol and the tree-based multicast protocol.

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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 19, 2001. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended February 19, 2021.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by February 19, 2023.
  • 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 19, 2001
GrantedNo grant recorded
Term endedFebruary 19, 2021
Patent numberCA 2337600 A1
Classification (IPC)H04L12/46 +2 more

Timeline

Timeline From CIPO dates

2002200420062008201020122014201620182020Application filedFeb 19, 2001Term endedFeb 19, 2021

Sources & verification

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