Arrangement for pipelines
CA 2419085 A1 · Owner: Sele, Arne · Inventors: Sele, Arne
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Arrangement for deepwater pipelines (2) wherein an internal thick-walled , pipeline (6) comprises an outer mantel layer providing buoyancy and/or insulation for said deepwater pipelines (2) said mantel layer comprising , lightweight concrete thereby forming a lightweight concrete mantel layer (5) said lightweight mantel layer (5) being covered by an external thin walled tube or skin (7), said external thin walled tube or skin (7) reinforcing said lightweight concrete mantel layer (5) and keeping said lightweight concrete mantel layer (5) dry.
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 17, 2001. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended September 17, 2021.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by September 17, 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.