Method and apparatus for connecting ipv4 devices through an ipv6 network using a tunnel setup protocol
CA 2419093 A1 · Owner: Blanchet, Marc · Inventors: Blanchet, Marc; Parent, Florent
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A .tunnel setup protocol enables tunnel clients to set up IPv4-in-IPv6 tunnels to permit IPv4 nodes to communicate across the IPv6 network using IPv4 native packets. The tunnel setup protocol is a control channel for negotiating tunnel configuration parameters and exchanging tunnel configuration data between a tunnel client and a tunnel broker server. The tunnel setup is automatic, support of IPv4 nodes and networks in IPv6 networks is enabled, and support of IPv4 devices after migration to IPv6 is facilitated.
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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 13, 2003. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended February 13, 2023.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by February 13, 2025.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Timeline
Timeline From CIPO dates
Sources & verification
Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.