Impact-resistant polyolefin compositions
CA 2470660 A1 · Owner: Cagnani, Camillo · Inventors: Pelliconi, Anteo; Cagnani, Camillo
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Polyolefin compositions comprising (percent by weight): 1) 55 % - 90 % of a crystalline propylene homopolymer or copolymer containing up to 15 % of ethylene and/or C4-C10 .alpha.-olefin(s); 2) 10 % - 45 % of a blend of a copolymer of propylene with more than 15 % up to 40 % of ethylene (copolymer (a)), and a copolymer of ethylene with one or more C4-C10 .alpha.-olefin(s) containing from 10 % to 40 % of said C4-C10 .alpha.-olefin(s) (copolymer (b)) wherein the weight ratio (a)/(b) is from 1/4 to 4/1.
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 December 11, 2002. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended December 11, 2022.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 11, 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.