Material comprising a polyamide, a polyether-polyamide block polymer and a functionalized polyolefin, film and object obtained from the said material
CA 2219483 C · Owner: Bouilloux, Alain · Inventors: Alex, Patrick; Bouilloux, Alain
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 material comprising: (a) a polyamide; (b) a polyether- and PEG- polyether block polymer; (c) possibly a polyolefin; and (d) a functionalized polyolefin the various constituents being present in proportions in % by weight a b, c and d, such that: a > 0; b > 0; c + d > 0; a + b + c + d = 100; with a/b > 0.2; (a + b)/(c + d) > 1; and b/(a + b + c + d) < 0.5. The invention also relates to a breathable film and an antistatic object obtained from the material.
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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 November 18, 1997 and granted April 22, 2003. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended November 18, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 18, 2019.
- 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.