Packet switching
CA 2401337 A1 · Owner: British Telecommunications Public Limited Company · Inventors: Hill, Alan Michael
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A method of identifying available time slot(s) in a packet switch in order to route a packet from an input port to a designated output port the method , comprising the steps of: logically combining the status of each time slot with regard to the input port and with regard to the output port to generate the status of the time slot with regard to the given input port-output port pair; logically combining in pairs the status of input port-output port pairs to determine whether one of the input port-output port pairs is available and repeating the step of pair-wise logically combining the status of input portoutput port pairs to determine input port-output port pair availability until …
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 8, 2001. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended March 8, 2021.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 8, 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.
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.