Rubber compositions for the outer covering of tires, consisting of silica_materials containing a reinforcing additive based on a functionalized polyorganosiloxane and an organosilane compound
CA 2194899 A1 · Owner: Durel, Olivier · Inventors: Durel, Olivier; Bomal, Yves
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
ubber composition designed for use in manufacturing the outer covering of tires with improved hysteresis properties and netting safety; the composition is based on at least one elastomer and silica as reinforcement including a reinforcing additive consisting of a mixture and/or reaction product.
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 January 10, 1997. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended January 10, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by January 10, 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.