Manufacture of a pulverulent plasticised rubber-filler mixture
CA 1050686 A · Owner: Chemische Werke Huls Aktiengesellschaft · Inventors: Barnstedt, Egge; Berg, Gerhard; Nordsiek, Karl-Heinz
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A process for the manufacture of a free-flowing pulverulent rubber-, filler mixture containing plasticiser oil by combining a filler containing, plasticiser oil with an aqueous emulsion of a rubber solution and precipitat-, ing and drying the mixture wherein the plasticiser oil is adsorptively bound on the finely divided active filler in an amount of from 1 to 100 parts by weight, relative to 100 parts by weight of the filler the premix thus obtain-, ed, which continues to be free-flowing and pulverulent and consists of filler, charged with plasticiser oil is dispersed in water in the presence of an emulsifier, the resulting dispersion is intimately mixed with an aqueous emulsion of 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
- Granted March 13, 1979. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended March 13, 1996.
- 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.