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Expired Canadian patentCanada

Fiber reinforced spoolable pipe

CA 2490176 C · Owner: Feechan, Michael · Inventors: Quigley, Peter A.; Feechan, Michael

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 spoolable pipe is disclosed, the spoolable pipe having an internal pressure barrier formed about a longitudinal axis and a reinforcing layer(s) enclosing , the internal pressure barrier. In one embodiment, the reinforcing layer(s) can include fibers having at , least a partial helical orientation about approximately thirty and about approximately , seventy degrees relative to the longitudinal axis and, the wall can include , at least one external layer enclosing the reinforcing layer(s) and having a permeability at least ten times , greater than the permeability of the internal pressure barrier. The reinforcing layer(s) can , further include a coating. The pipe can also include an …

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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 December 13, 2004 and granted February 5, 2013. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended December 13, 2024.
  • 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.
FiledDecember 13, 2004
GrantedFebruary 5, 2013
Term endedDecember 13, 2024
Patent numberCA 2490176 C
Classification (IPC)F16L11/00 +2 more

Timeline

Timeline From CIPO dates

2005200720092011201320152017201920212023Application filedDec 13, 2004Patent grantedFeb 5, 2013Term endedDec 13, 2024

Sources & verification

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