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Expired Canadian patentCanada

Multicast packets generation device for a packet switching telecommunication system

CA 2092792 C · Owner: Alcatel N.V. · Inventors: Denissen, Frank Lodewijk

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 device (CP) to generate a number of multicast packets derived from a original packet applied at an input (Il/m) of a telecommunication system. The device has a device input,(I) coupled to an input (Il/m) of the system and a device output (IN) connected to a single inlet (INl/m) of a packet switching network (SN) also belonging to the system and coupled to outputs thereof. All the multicast packets are transmitted in series via the single device output (IN) so that only the corresponding single inlet (INl/m) of the switching network (SN) is used for performing point-to-multipoint or multicast connections independently of the number of multicast packets to be derived from each original …

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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 March 26, 1993 and granted December 28, 1999. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended March 26, 2013.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 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.
FiledMarch 26, 1993
GrantedDecember 28, 1999
Term endedMarch 26, 2013
Patent numberCA 2092792 C
Classification (IPC)H04L12/56 +2 more

Timeline

Timeline From CIPO dates

1994199619982000200220042006200820102012Application filedMarch 26, 1993Patent grantedDec 28, 1999Term endedMarch 26, 2013

Sources & verification

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