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Expired Canadian patentCanada

Traffic intermixing mechanism for fast circuit switching

CA 2114569 C · Owner: Georgiou, Christos J. · Inventors: Georgiou, Christos J.; Li, Chung-Sheng

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 method and apparatus for intermixing circuit and packet data on a shared transmission medium. With this invention, the history of gaps between transmitted circuit frames is used to predict future gap sizes. If the size of a predicted gap is larger than the size of a frame of packet data to be transmitted, then the packet data is inserted in the next gap. If a circuit data frame arrives before the completion of transmission of a packet frame the circuit data will be stored in an insertion buffer until completion of transmission of the packet frame.

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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 31, 1994 and granted March 2, 1999. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended January 31, 2014.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by January 31, 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.
FiledJanuary 31, 1994
GrantedMarch 2, 1999
Term endedJanuary 31, 2014
Patent numberCA 2114569 C
Classification (IPC)H04L12/56 +2 more

Timeline

Timeline From CIPO dates

1995199719992001200320052007200920112013Application filedJan 31, 1994Patent grantedMarch 2, 1999Term endedJan 31, 2014

Sources & verification

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