Parallel service-rate controllers in atm switches
CA 2286012 C · Owner: Nortel Networks Corporation · Inventors: Nichols, Stacy W.; Beshai, Maged E.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Techniques of service-rate controls in ATM switches are described and , apparatus for their implementation are devised. The techniques fall in two categories: frequency domain controls, and time-domain controls. The regulators control the service rate on a per-class basis or on a perconnection basis. Some class regulators operate at very high speeds of the order of several gigabits per second and cover a medium number of classes 32 , for example. Other regulators operate at high speeds of the order of severalhundred megabits per second, and cover a very large number of classes e.g. 10,000. A compound regulator which combines both types of regulators is also described. The compound …
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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 6, 1998 and granted December 9, 2003. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended April 6, 2018.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 6, 2020.
- 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.