Upc unit and upc controlling method
CA 2199570 C · Owner: Nec Corporation · Inventors: Murase, Tutomu
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A PC unit 1 includes a congestion detecting circuit 4 for detecting a congesting status of a network 3 from a flow of cells in the backward direction and calculating or determining a parameter required for PC based on the congestion status a, rewritable parameter memory 5 for storing the parameter and a, DGCRA circuit 6 for checking a conformance of cells in the forward direction on the basis of the information of the parameter memory 5 and the specified information.
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 10, 1997 and granted August 14, 2001. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended March 10, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 10, 2019.
- 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.