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Expired Canadian patentCanada

Upc-based traffic control framework for atm networks

CA 2118471 C · Owner: Ramamurthy, Gopalakrishnan · Inventors: Dighe, Rajiv; Raychaudhuri, Dipankar; Ramamurthy, Gopalakrishnan

CIPO record

Overview

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Abstract From the Canadian patent

An asynchronous transfer mode (ATM) traffic control framework is based on an integrated usage parameter control (UPC) approach which approach provides, a unified and scalable solution to the issue of quality-of-services (QOS) levels over, a range of anticipated services in ATM based networks. The approach is consistent, with emerging ATM Forum and CCITT standards. Additionally a UPC-based, call and burst admission control providing the desired QOS over periods of network overload by call/burst admission control and traffic shaping of source stream, preferably uses a dual leaky bucket.

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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 October 19, 1994 and granted December 21, 1999. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended October 19, 2014.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 19, 2016.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledOctober 19, 1994
GrantedDecember 21, 1999
Term endedOctober 19, 2014
Patent numberCA 2118471 C
Classification (IPC)H04L12/54 +2 more

Timeline

Timeline From CIPO dates

1995199719992001200320052007200920112013Application filedOct 19, 1994Patent grantedDec 21, 1999Term endedOct 19, 2014

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