Procedure for synthesis of a white or light-coloured cross-linked halogen containing polymer
CA 2116861 A1 · Owner: Norsk Hydro A.S. · Inventors: Dahl, Roger
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
White or light-coloured cross-linked polymer and a procedure for synthesis of the same. The polymer consists of 30-98 weight percent halogen containing polymer, 0-60 weight percent plasticizer 0.05-10 weight percent hydrolysable mercaptosilane 0.1-10 weight , percent lead stabilizer 0-4 weight percent lubricant and 0.1-10 weight percent epoxy resin. The cross-linking is carried out in the presence of moisture after the processing of the polymer.
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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 August 17, 1992. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended August 17, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by August 17, 2014.
- 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.