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Expired Canadian patentCanada

Anti-biofouling seismic streamer casing and method of manufacture

CA 2571600 C · Owner: Lobe, Henry J. · Inventors: Knapp, John Russel; Lobe, Henry J.; Tolman, Thomas K.

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Abstract From the Canadian patent

An anti-biofouling seismic streamer casing (100,100') is provided that is formed by a flexible tubing (110) coated with a layer of a two-part heat cured silicone elastomer (120). The seismic streamer casing (100 100') is formed by , a method that includes steps of providing a flexi+e tubing (200) and pretreating the outer surface of the tubing (210). Two parts of a two-part silicone elastomer are then mixed together (220). The method also includes coating the mixed two-part silicone elastomer on the flexible tubing (230) and heating the flexi+e tubing to cure the coating (240).

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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 June 30, 2005 and granted February 21, 2012. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended June 30, 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.
FiledJune 30, 2005
GrantedFebruary 21, 2012
Term endedJune 30, 2025
Patent numberCA 2571600 C
Classification (IPC)B32B9/04

Timeline

Timeline From CIPO dates

2006200820102012201420162018202020222024Application filedJune 30, 2005Patent grantedFeb 21, 2012Term endedJune 30, 2025

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