Polyamide or polyester- and aluminium multilayer tube for fluid transfer
CA 2465243 A1 · Owner: Atofina · Inventors: Merziger, Joachim; Seidel, Ulrich
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention relates to a multilayer tube comprising in its radial , direction from the outside inwards: an outer layer formed from a polyamide or a polyolefin or a polyester, a layer formed from a binder a layer of , aluminium, a layer formed from a binder an inner layer in contact with the , petrol chosen from: blends of polyamide and polyolefin with a polyamide matrix, polyamides comprising at least one product chosen from plasticizers copolymers having polyamide blocks and polyether blocks and EPR-type modifiers, polyesters, the layers being successive and adhering to one another in their respective contact region.
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 October 24, 2002. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended October 24, 2022.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 24, 2024.
- 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.