Packet switching
CA 2482811 C · Owner: King'S College London · Inventors: Crossland, William Alden; Hall, Trevor James
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A packet switch having plural input sectors and output sectors each input , sector being arranged to hold at least one queue per output sector each , output sector having plural output ports and being arranged to hold at least one queue per output port wherein the input sectors are connected to the output sectors via links configured to afford speed-up of data transfer wherein the links comprise a set of links and wherein the switch has means , for cyclically connecting different subsets of the set of links between the input sectors and the output sectors, and means responsive to statistical variations in traffic applied to input ports of said input sectors to vary the set of links.
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 April 16, 2003 and granted October 28, 2014. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended April 16, 2023.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 16, 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.