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Expired Canadian patentCanada

System and method for propagating revisions through a communications network

CA 2192258 C · Owner: Otto, George V.E. · Inventors: Otto, George V.E.

CIPO record

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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 system, and method of operation, for propagating revisions through a communications, network. The system includes: (1) status reporting circuitry associated with , a second node of the communications network, for collecting and transmitting a current status of second node, information stored in a memory of the second node (2) first information , revising circuitry associated with a first node of the communications network for receiving the , current status from the second node, determining as a function of the current status whether a revision of the second, node information is required and if the revision is required, transmitting the revision to the, second node to revise the second …

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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 December 6, 1996 and granted August 8, 2000. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended December 6, 2016.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 6, 2018.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledDecember 6, 1996
GrantedAugust 8, 2000
Term endedDecember 6, 2016
Patent numberCA 2192258 C
Classification (IPC)H04L45/00 +1 more

Timeline

Timeline From CIPO dates

1997199920012003200520072009201120132015Application filedDec 6, 1996Patent grantedAug 8, 2000Term endedDec 6, 2016

Sources & verification

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