Gel-containing rubber compounds for tyre components subjected to dynamic stress
CA 2344955 A1 · Owner: Sumner, Anthony · Inventors: Sumner, Anthony; Obrecht, Werner
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention concerns rubber compounds consisting of at least one double bondcontaining rubber and additions of polybutadiene rubber particles having a glass, transition temperature <-60°C together with vulcanisates and rubber mouldings, manufactured therefrom. The rubber compounds according to the invention are characterised in the uncrosslinked state by good processability and adequate scorch resistance and in the, vulcanised state by high Shore A hardness high impact resistance, low , hysteresis losses and low heating-up under dynamic stress together with a low specific , density. The vulcanisates are particularly suitable for the manufacture of tyre components for, which low …
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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 April 25, 2001. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended April 25, 2021.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 25, 2023.
- 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.