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Expired Canadian patentCanada

A vessel for transporting wind turbines, methods of moving a wind turbine, and a wind turbine for an off-shore wind farm

CA 2520219 C · Owner: Logima V/Svend Erik Hansen · Inventors: Hansen, Svend Erik

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 wind turbine (1) has a base (5) divided into at least three ballast tanks (12). A vessel (7) has means for displacing the wind turbine between a loading space (25) and an unloading position (26). At its unloading position the vessel has winches (11) with at least three flexible lines (10) that can be connected with horizontally distanced lifting points (23) on the wind turbine base.

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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 April 2, 2004 and granted August 13, 2013. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended April 2, 2024.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 2, 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.
FiledApril 2, 2004
GrantedAugust 13, 2013
Term endedApril 2, 2024
Patent numberCA 2520219 C
Classification (IPC)B63B35/00 +2 more

Timeline

Timeline From CIPO dates

2005200720092011201320152017201920212023Application filedApril 2, 2004Patent grantedAug 13, 2013Term endedApril 2, 2024

Sources & verification

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