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Expired Canadian patentCanada

Non-broadcast multi-access network system capable of carrying out transmission of a next hop resolution protocol packet without setting internet protocol addresses

CA 2213043 C · Owner: Iwata, Atsushi · Inventors: Iwata, Atsushi; Horikawa, Koichi

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 non-broadcast multi-access network system comprises a plurality of network servers at least specific one of which servers employs Next Hop Resolution Protocol for converting a network layer address into a corresponding data link layer address. The specific network server comprises a routing table access section (102) for accessing a routing table to refer to the routing table representative of a routing of a network layer. An NHRP server table (103) stores server address information of at least particular one of the network servers and network layer address information of the network layer managed by the particular network server as an address set. An NHRP server processing section (101) …

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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 August 14, 1997 and granted February 13, 2001. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended August 14, 2017.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by August 14, 2019.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledAugust 14, 1997
GrantedFebruary 13, 2001
Term endedAugust 14, 2017
Patent numberCA 2213043 C
Classification (IPC)H04L61/10 +2 more

Timeline

Timeline From CIPO dates

1998200020022004200620082010201220142016Application filedAug 14, 1997Patent grantedFeb 13, 2001Term endedAug 14, 2017

Sources & verification

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