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Expired Canadian patentCanada

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CA 2244116 C · Owner: Whittaker, Steven John · Inventors: Olsen, Paul Andrew; Whittaker, Steven John; Bridgeman, Seamus Aodhain

CIPO record

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Abstract From the Canadian patent

A method and apparatus for accessing a database system said database system , comprising a database containing entries each comprising a plurality of fields which contain machine representations of items of information pertaining to the entry, the said representations forming a first vocabulary; output means responsive to machine representations falling within a second vocabulary of such representations to generate signals representing the machine representations; and input means operable to receive signals and to produce machine representations falling within a third vocabulary of such representations. The method of accessing the database system comprises (i) generating, in …

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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 January 27, 1997 and granted November 27, 2001. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended January 27, 2017.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by January 27, 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.
FiledJanuary 27, 1997
GrantedNovember 27, 2001
Term endedJanuary 27, 2017
Patent numberCA 2244116 C
Classification (IPC)G06F17/30 +2 more

Timeline

Timeline From CIPO dates

1998200020022004200620082010201220142016Application filedJan 27, 1997Patent grantedNov 27, 2001Term endedJan 27, 2017

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