Method for interconnecting electrical conduits in a borehole
CA 2540972 C · Owner: Shell Canada Limited · Inventors: Griffiths, Neil
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A method for interconnecting electrical conduits in an underground borehole by means of a self-cleaning downhole electrical connector with a static and a moveable connector part (4,3), comprises installing the static connector part (4) within the borehole such that a central throughbore (7) within the static part (4) provides a passage for fluid and debris passage and for access there beneath after retrieval of the moveable connector part (3); and lowering the movable connector part (3) on top of the static connector part (4) such that pairs of electrical contacts (8 and 11A-C) of the static and movable connector parts (4,3) intermesh and fluid and debris is discharged via the …
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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 October 7, 2004 and granted March 13, 2012. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended October 7, 2024.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 7, 2026.
- 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.