Composite plastic pipe
CA 2020577 A1 · Owner: Jonaco Gmbh · Inventors: Dierickx, Patrieck
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
7 -, "Composite plastic pipe". Composite plastic pipe characterised in that it, principally consists in the combination of an extruded pipe in thermoplastic synthetic material and a pultruded pipe or pipe obtained by pull winding in thermoplastic or preferably thermo-hardening synthetic material which fit closely. Figure 1.
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 July 6, 1990. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended July 6, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 6, 2012.
- 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.