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Expired Canadian patentCanada

Ipsec processing

CA 2409294 C · Owner: Turtiainen, Esa · Inventors: Linnakangas, Tommi; Lindborg, Seppo; Karna, Juha-Petri

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 network device for implementing IPSec and comprising at least one IP forwarder (IPFW) arranged to receive IP packets each of which is associated with a Security Association (SA). The IP forwarder(s) determines the destinations of the packets, and forwards the packets to their destinations. A plurality of security procedure modules (SecProcs) are coupled to the IP forwarder(s) and are arranged to implement security procedures for received IP packets in parallel. A security controller (SC) is arranged to allocate negotiated SAs amongst the security procedure modules and to notify the security procedure modules and the IP forwarder(s) of the allocation whereby , the IP forwarder(s) …

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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 May 3, 2001 and granted July 12, 2011. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended May 3, 2021.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 3, 2023.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledMay 3, 2001
GrantedJuly 12, 2011
Term endedMay 3, 2021
Patent numberCA 2409294 C
Classification (IPC)H04L29/06

Timeline

Timeline From CIPO dates

2002200420062008201020122014201620182020Application filedMay 3, 2001Patent grantedJuly 12, 2011Term endedMay 3, 2021

Sources & verification

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