Blends based on vinyl-aromatic polymers endowed with high mechanical characteristics
CA 2026765 C · Owner: Ghidoni, Dario · Inventors: Licon, Andrea; Callaioli, Andrea; Fasulo, Gian C.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Blends based on vinyl-aromatic polymers endowed with high mechanical characteristics, even after successive processings at temperatures equal to or higher than 200ÀC and unvaried rheological properties, comprising: -- 10 to 90% by weight of a vinyl-aromatic polymer containing from 0.5 to 5% by weight of a vinylaromatic monomer conjugated diene linear block copolymer and from 5 to 15% by weight of a diene rubber; -- 5 - 50% by weight of a polyolefine; and -- 5 - 40% by weight of a vinyl-aromatic monomer conjugated diene star block radial copolymer having a diene, content comprised between 5 and 35% by weight; the sum of the three components being equal to 100%.
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 October 2, 1990 and granted April 2, 2002. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended October 2, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 2, 2012.
- 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.