Powdered rubber
CA 1069388 A · Owner: Polysar Limited · Inventors: Richmond, Michael H.; Fischer, Erhardt
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Abstract of the Disclosure Conjugated diolefin-vinyl nitrile compound rubbers are produced in powdered form by a process wherein a latex of the conjugated diolefin-vinyl nitrile compound rubber and a minor proportion of a latex of a conjugated diolefin-vinyl nitrile compound-vinyl aromatic hydrocarbon polymer are simultaneously coagulated and the so-formed coagulated rubber particles are encapsulated by addition thereto of a latex of the conjugated diolefin-vinyl nitrile compound-vinyl aromatic hydrocarbon polymer. Such powdered rubbers may be used wherever conjugated diolefin-vinyl nitrile compound rubbers are used. - 1 -
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
- Granted January 8, 1980. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended January 8, 1997.
- 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.