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Expired Canadian patentCanada

An arrangement for performing automatic build out in a communications system that supports multiple constant-bit-rate connections

CA 2280261 C · Owner: Lucent Technologies, Inc. · Inventors: Chan, Norman C.; Petty, Norman W.

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

In an asynchronous transfer mode (ATM) disassembler unit that is receiving ATM cells from an optical interface and converting data from these cells onto a constant bit rate (CBR) call only a nominal, predefined build out is defined for each optical interface. If an ATM cell is not received within the proper amount of time for the CBR call from the optical interface, the build out is automatically adjusted so that the build out, is equal to the amount of delay that was experienced in receiving the next ATM cell for the call. Only the build out for the individual call that actually, experienced the delay of the ATM cell is redefined. The other calls being handled by the optical interface …

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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 11, 1999 and granted November 4, 2003. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended August 11, 2019.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by August 11, 2021.
  • 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 11, 1999
GrantedNovember 4, 2003
Term endedAugust 11, 2019
Patent numberCA 2280261 C
Classification (IPC)H04L7/00 +2 more

Timeline

Timeline From CIPO dates

2000200220042006200820102012201420162018Application filedAug 11, 1999Patent grantedNov 4, 2003Term endedAug 11, 2019

Sources & verification

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