Rubber-reinforced vinyl aromatic polymers
CA 2531748 C · Owner: Casalini, Alessandro · Inventors: Rossi, Anna Grazia; Casalini, Alessandro; Monti, Luca
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Rubber-reinforced vinyl aromatic polymers having a strictly bimodal morphology, comprising from 55 to 90 % by weight of a rigid polymeric matrix and from 10 to 45 % by weight of a rubbery phase dispersed inside said rigid polymeric matrix in the form of grafted and occluded particles and wherein said rubber particles consist of from 60 to 99 % by weight of particles with a capsule or "core-shell" morphology and from 1 to 40 % by weight of particles with a "salami" morphology, said percentages being measured on the basis of the weight of the rubber particles only.
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 July 2, 2004 and granted October 7, 2014. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended July 2, 2024.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 2, 2026.
- 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.