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Expired Canadian patentCanada

Packet network and method for congestion avoidance in packet networks

CA 2094896 C · Owner: Tatsuno, Hideo · Inventors: Kajiyama, Yoshio; Tatsuno, Hideo; Tokura, Nobuyuki

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

The invention disclosed relates to packet networks with variable bit rate attributes. Specifically it relates, to packet networks that can transfer variable length packets including frame relay service or ATM (Asynchronous Transfer Mode) and other fixed length packets (cells) at variable bit rates, and to a method for avoiding congestion in packet networks, and also to the mode configurations required for these purposes.

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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 April 26, 1993 and granted September 14, 1999. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended April 26, 2013.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 26, 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.
FiledApril 26, 1993
GrantedSeptember 14, 1999
Term endedApril 26, 2013
Patent numberCA 2094896 C
Classification (IPC)H04L12/56

Timeline

Timeline From CIPO dates

1994199619982000200220042006200820102012Application filedApril 26, 1993Patent grantedSep 14, 1999Term endedApril 26, 2013

Sources & verification

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