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Expired Canadian patentCanada

Bandwidth allocation, transmission scheduling, and congestion avoidance in broadband atm networks

CA 2104753 C · Owner: American Telephone And Telegraph Company · Inventors: Sriram, Kotikalapudi

CIPO record

Overview

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Its claims, description and drawings are in the Canadian Patents Database.

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Abstract From the Canadian patent

A wide variety of call traffic is effectively integrated in a single broadband communications network. Calls having widely differing bandwidth requirements and sensitivities to delay are handled by the network with efficient effective, and fair bandwidth allocation and transmission scheduling. This is accomplished by classifying each call in accordance with certain signal characteristics such as required bandwidth and sensitivity to delay. Each call class is directed to a separate queuing circuit. Some calls in certain classes such as those associated with, high-bandwidth constant bit rate services are each directed to their own individual queuing circuits. Other calls within a class are …

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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 August 24, 1993 and granted February 16, 1999. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended August 24, 2013.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by August 24, 2015.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledAugust 24, 1993
GrantedFebruary 16, 1999
Term endedAugust 24, 2013
Patent numberCA 2104753 C
Classification (IPC)H04Q3/00 +2 more

Timeline

Timeline From CIPO dates

1994199619982000200220042006200820102012Application filedAug 24, 1993Patent grantedFeb 16, 1999Term endedAug 24, 2013

Sources & verification

Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.