Multiconductor electrical cable
CA 2255482 A1 · Owner: Bruewer, Timothy B. · Inventors: Bruewer, Timothy B.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A multiconductor electrical cable for use in a subterranean wellbore has improved resistance to swelling caused by the absorption of deleterious fluids. The cable comprises a plurality of electrical conductors; at least one layer of an insulation material surrounding the plurality of electrical conductors; a jacket of elastomeric material surrounding the insulated electrical conductors; a fluid barrier surrounding the jacket; and an outer armor surrounding the fluid barrier. The fluid barrier prevents hydrocarbons and water from being absorbed into the jacket of elastomeric material thereby preventing the swelling of the cable. The outer armor can include a coating of thermoset and/or …
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 December 10, 1998. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended December 10, 2018.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 10, 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.