Expired Canadian patentCanada
Plastic coated steel tube
CA 1307213 C · Owner: Borealis Holdings A/S · Inventors: Bergstrom, Christer; Karttunen, Mikko; Von Knorring, Johan
Overview
Drawings and full text
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention concerns a plastic coated steel tube which contains at least one layer of a polyolefin which has been modified with a hydrolysable silane.
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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
- Granted September 8, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended September 8, 2009.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledJune 6, 1989
GrantedSeptember 8, 1992
Term endedSeptember 8, 2009
Patent numberCA 1307213 C
Classification (IPC)F16L9/00 +2 more
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.