Multi-layer container
CA 2070758 A1 · Owner: Saito, Keiichi · Inventors: Nishida, Koji; Saito, Keiichi
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A multi-layer container having at least layer A comprising a polyolefin resin having an MFR of from 0.001 to 0.5 dg/min, layer B (adhesive layer) comprising an .alpha..beta.unsaturated carboxylic acid (or anhydride)-modified polyolefin resin, and layer C comprising polyamide polyphenyl-, ene ether, a compatibilizer and an impact modifier, in, which the polyphenylene ether is finely dispersed in the polyamide matrix. The container has excellent impermeability to hydrocarbon solvents and low-temperature impact resistance and is useful particularly as a gasoline tank. -37-
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 June 9, 1992. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended June 9, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 9, 2014.
- 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.