Method and system for determining pipeline defects
CA 2249092 C · Owner: Ridley, Rodney K. · Inventors: Rajan, Varagur S.V.; Staples, Lawrence B.; Winslow, Jens C.B.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
In accordance with the teachings of the present invention a method is provided for analyzing RFT data from a data file. The method includes parsing the data file into pipe lengths calculating a phase profile for the data points within each pipe length locating potential defects in the pipe length using the phase profiles determining for each defect a total equivalent phase shift as a combination of a circumferential equivalent phase shift and a non-circumferential equivalent phase shift and using the total equivalent phase shift to analyze the defect.
Read the whole patent
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 September 30, 1998 and granted November 5, 2013. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended September 30, 2018.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by September 30, 2020.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Timeline
Timeline From CIPO dates
Sources & verification
Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.