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Expired Canadian patentCanada

Wellhead shelter

CA 2508559 C · Owner: Tugboat Energy Services Inc. · Inventors: Thompson, Timothy

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 wellhead shelter includes a catch pan including at least two sections defining therebetween an opening the opening being positionable about the wellhead when the pan sections are secured together; and an upwardly extending cover including at least two members each being connectable adjacent their lower ends to the pan and connectable together for covering at least a part of the wellhead.

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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 May 27, 2005 and granted August 7, 2012. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended May 27, 2025.
  • Certificates of supplementary protection extend only drug patents, and it isn't classified as one.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledMay 27, 2005
GrantedAugust 7, 2012
Term endedMay 27, 2025
Patent numberCA 2508559 C
Classification (IPC)E21B33/03 +2 more

Timeline

Timeline From CIPO dates

2006200820102012201420162018202020222024Application filedMay 27, 2005Patent grantedAug 7, 2012Term endedMay 27, 2025

Sources & verification

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