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Expired Canadian patentCanada

Hyper-text document preparing apparatus

CA 2191666 C · Owner: Matsushita Electric Industrial Co. Ltd. · Inventors: Inoue, Kazunori; Sakushima, Kazuo

CIPO record

Overview

Drawings and full text

Its claims, description and drawings are in the Canadian Patents Database.

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Abstract From the Canadian patent

A plurality of elements of a document is classified into a plurality of services respectively relating to a meaning and, a plurality of nodes respectively indicating one element are prepared in a node preparing unit. Therefore each of services, is a partial set of nodes. Also a plurality of inner-service, links respectively connecting a pair of nodes of the same service are prepared by an inner-service link preparing unit so that a reference relationship between the nodes is indicated by one inner-service link. Also a plurality of, inter-service links respectively connecting a pair of nodes of different services are prepared by an inter-service link preparing unit, so that a reference …

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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 November 29, 1996 and granted March 28, 2000. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended November 29, 2016.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 29, 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.
FiledNovember 29, 1996
GrantedMarch 28, 2000
Term endedNovember 29, 2016
Patent numberCA 2191666 C
Classification (IPC)G06F13/14 +2 more

Timeline

Timeline From CIPO dates

1997199920012003200520072009201120132015Application filedNov 29, 1996Patent grantedMarch 28, 2000Term endedNov 29, 2016

Sources & verification

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