Rubber composition, method of formulating and blending the same and article and vehicle tire made therefrom
CA 2279220 A1 · Owner: Wendling, Peter · Inventors: Scholl, Thomas; Well, Michael; Monroy, Victor
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A rubber mixture containing at least one rubber component at least one, filler, and conventional additives that it contain at least one first gel as a filler, which is essentially comprised of a rubber has a particle size of 3x10 -9 to , 1x10 -6 m, and has a swelling index in toluene of 1 to 15 and at least the surface of , this, gel has acid or base groups where these groups have not been produced by means of reaction with dithiophosphonic acid and comprises:, a) at least one second gel as an additional filler which is essentially, comprised of a rubber has a particle size of 3x10 -9 to 1x10 -6 and has a, swelling index in toluene of 1 to 15 which is in a position to undergo a, …
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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 July 30, 1999. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended July 30, 2019.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 30, 2021.
- 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.