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Expired Canadian patentCanada

A method for supporting per-connection queuing for feedback-controlled traffic

CA 2227244 C · Owner: Suter, Bernhard · Inventors: Lakshman, Tirunellai Viswanathan; Stiliadis, Dimitrios; Choudhury, Abhijit Kumar

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 per-flow queuing method and apparatus for IP networks carrying traffic from feedback controlled TCP connections enables flow of information packets from one or more sources to a destination through a link and comprises a buffer of predetermined size partitioned into a plurality of queues, each queue being allocated an occupancy bi for receiving and temporarily storing packets of information; a scheduler for removing packets from each buffer according to a predetermined rate and transmitting the packets over a network; and a control device for determining availablilty of queues in the buffer capable of receiving the packet and inputting the packet into a queue if the queue is available the …

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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 January 19, 1998 and granted October 2, 2001. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended January 19, 2018.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by January 19, 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.
FiledJanuary 19, 1998
GrantedOctober 2, 2001
Term endedJanuary 19, 2018
Patent numberCA 2227244 C
Classification (IPC)H04L47/50 +2 more

Timeline

Timeline From CIPO dates

1999200120032005200720092011201320152017Application filedJan 19, 1998Patent grantedOct 2, 2001Term endedJan 19, 2018

Sources & verification

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