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Expired Canadian patentCanada

Method, system and apparatus for accessing stored spatial data

CA 2540818 C · Owner: Schlumberger Technology Corporation · Inventors: Benum, Trond; Rugland, Terje

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Abstract From the Canadian patent

An apparatus, method and system for accessing database attributes stored in a first database are disclosed. The database attributes may be stored in , a proprietary manner. The invention includes a data access layer having a second database, which maps visible attributes to the database attributes. The second database includes one or more artificial attributes stored in , metadata. , The invention also includes an attribute pre-processing module for scanning a user request to see if the request includes the artificial attribute. The attribute , pre--processing module creates an artificial attribute post processor which , can build a , real attribute from a combination of the artificial …

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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 October 1, 2004 and granted March 13, 2012. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended October 1, 2024.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 1, 2026.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledOctober 1, 2004
GrantedMarch 13, 2012
Term endedOctober 1, 2024
Patent numberCA 2540818 C
Classification (IPC)—

Timeline

Timeline From CIPO dates

2005200720092011201320152017201920212023Application filedOct 1, 2004Patent grantedMarch 13, 2012Term endedOct 1, 2024

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