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Expired Canadian patentCanada

System and method for remote quantitative detection of fluid leaks from a natural gas or oil pipeline

CA 2550156 C · Owner: Itt Manufacturing Enterprises Llc · Inventors: Spoonhower, John P.; Kalayeh, Hooshmand M.; Paz-Pujalt, Gustavo R.

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Abstract From the Canadian patent

A system for remote quantitative detection of fluid leaks from a natural gas or oil pipeline by use of an airborne platform; including at least one laser light source for nearly simultaneous illuminating two or more target fluids and a background, wherein the two or more target fluids are characterized by two or more absorption wavelengths, and wherein the background has a different wavelength than either of the two or more target fluids. The illumination source is pointed based on a positioning system while in a geometric area along a path two or more target fluids are scanned for using the illumination sources. A signal detector detects the two or more target fluids using …

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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 17, 2004 and granted May 12, 2015. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended December 17, 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 17, 2004
GrantedMay 12, 2015
Term endedDecember 17, 2024
Patent numberCA 2550156 C
Classification (IPC)G01M3/04 +2 more

Timeline

Timeline From CIPO dates

2005200720092011201320152017201920212023Application filedDec 17, 2004Patent grantedMay 12, 2015Term endedDec 17, 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.