Coextrusion binder for polyster based on co-grafted lldpe and metallocene polyethylene and metallocene polyethylene
CA 2500208 C · Owner: Chopinez, Fabrice · Inventors: Pradel, Jean-Laurent; Rauline, Damien; Chopinez, Fabrice
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention relates to a coextrusion binder containing: between 5 and 35 wt.- % of a polymer (A) comprising a mixture of between 80 and 20 wt.- % of a metallocene polyethylene (A1) having a density of between 0.863 and 0.915 and between 20 and 80 wt.- % of a non-metallocene LLDPE polyethylene (A2) having a density of between 0.9 and 0.95 the mixture of polymers A1 and A2 being co-grafted; and between 95 and 65 wt.- % of homo-or copolymer metallocene polyethylene (B) the comonomer of which comprises between 3 and 20 carbon atoms preferably between 4 and 8 carbon atoms having a density of between 0.863 and 0.915 and an MFI of between 0.5 and 30 preferably between 3 and 15 g/10 min, with the …
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 26, 2003 and granted June 5, 2012. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended September 26, 2023.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by September 26, 2025.
- 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.