Stabilised vinyl chloride composition
CA 2179191 C · Owner: Schmets, Gerard Hub Frans · Inventors: Harvey, Heather Blue; Burley, Joseph William; Schmets, Gerard Hub Frans
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A composition based on polymers and/or co-polymers of vinyl chloride comprises the following compounds, expressed by weight relative to the weight of the polymers/co-polymers: (a) from 0.1 % to 5 % of one or more organotin salts and/or one or more divalent metal salts of a carboxylic acid or phenol; and (b) from 0.001 % to 5 % of one or more organic compounds of general formula (Compound A) in which R1 represents a linear or branched alkylene or alkenylene radical having up to 20 carbon atoms an aralkylene radical having , from 7 to 20 carbon atoms or an arylene or cycloalkylene radical having from 6 to 20 carbon atoms, the cycloalkylene radicals optionally containing carboncarbon …
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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 December 9, 1994 and granted September 9, 2003. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended December 9, 2014.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 9, 2016.
- 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.