Virtual private network forming system and method
CA 2267033 A1 · Owner: Yamano, Shigeki · Inventors: Yamano, Shigeki
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
In a network system composed of an ATM network and a plurality of frame relay networks, a first VPN-capable edge device transfers a packet to a second VPN-capable edge device through a virtual channel connection (VCC) of a virtual private network (VPN), wherein the packet is received from a user router belonging to the VPN and the virtual channel connection is determined depending on a layer-3 destination address of the packet and a VPN identifier assigned to the VPN.
Read the whole patent
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 March 26, 1999. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended March 26, 2019.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 26, 2021.
- 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.