Network addressing arrangement for backward compatible routing of an expanded address space
CA 2226204 C · Owner: Castagnoli, Neal D. · Inventors: Perlman, Radia J.; Castagnoli, Neal D.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An improved network addressing arrangement expands both the format of a network layer header and the address spaces of nodes coupled to computer networks in a manner that efficiently enhances routing among nodes of different domains of the networks. Specifically the novel arrangement , provides new elements to a conventional hierarchical network layer address and modifies existing elements, i.e. destination network and socket numbers of , that address to effectively create an improved network layer header.
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 July 2, 1996 and granted September 11, 2001. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended July 2, 2016.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 2, 2018.
- 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.