Method and installation for switching packets
CA 2039497 C · Owner: Koninklijke Kpn N.V. · Inventors: De Vries, Rein Jan Folkert
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention relates to a method for switching packets, which are transferrable by transmission cells and comprise a control code, in a switching system having a number of inputs and a number of outputs from the, input at which the packet appears to a specific output derived from the control code of the packet. The invention provides that the packets appearing at the inputs are fed, via a number of first transmission channels containing first transmission cells to a number, of second transmission channels containing second, transmission cells, leading to the outputs of the switching system, a packet of this type transferred by a first transmission cell always being transmitted to the next …
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 2, 1991 and granted January 16, 1996. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended April 2, 2011.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 2, 2013.
- 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.