Flexible tube, resistant to stress cracking and impermeable to water vapour
CA 2402540 A1 · Owner: Dambricourt, Gery · Inventors: Dambricourt, Gery
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention concerns a tube comprising a wall made of C¿4?-C¿10? linear ethylene-olefin copolymer or a mixture of C¿4?-C¿10? linear ethylene-olefin copolymer having a melt index ranging between 3 and 10 g/mn and a density ranging between 0.880 g/cm?3¿ and 0.935 g/cm?3¿ inclusive. The skirt has a mid-height wall thickness ranging between 0.30 and 10 mm inclusive and a length between 40 and 200 mm inclusive. Furthermore the skirt and the dispensing head are made in a single injection moulding operation in an injection mould. The invention is useful for making tube-like packages.
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 March 16, 2001. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended March 16, 2021.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 16, 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.