System to measure the state of corrosion of buried metallic structures continuously in time and in length
CA 2408248 A1 · Owner: Pierre, Christian · Inventors: Verbeke, Peter; Pierre, Christian
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention is related to a system for measuring the state of corrosion of a buried metallic structure such as a pipe line, characterized , in that said measurement system allows said corrosion measurement simultaneously and continuously in time on several locations of said buried structure. The measurement system comprises a measuring cable (1) itself , comprising several current electrodes (2) and several measuring electrodes (3), several addressable switching devices (20) and an electrical bus (6) a , reference electrode (5) and a control system (4) comprising an embedded controller (8), an interface board (9) and a measurement board (7) wherein , said measurement board …
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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 3, 2001. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended May 3, 2021.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 3, 2023.
- 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.