Halogenated polymers compositions stabilized with a mineral additive
CA 2065566 C · Owner: Arfiche, Mireille · Inventors: Pouenat, Francois; Carette, Louis; Arfiche, Mireille
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention relates to new stabilized compositions based on halogenated polymers and more specifically on chlorinated polymer. It relates more particularly to stabilized compositions based on chlorinated polymers which are characterized in that they contain: a) an effective quantity of an organic zinc or cadmium compound b) an effective quantity of an organic calcium magnesium, barium or lanthanide compound c) an effective quantity of at least one essentially amorphous basic aluminum magnesium carbonate d) and eventually an effective amount of at least one secondary organic stabilizer.
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
- Filed April 8, 1992 and granted December 29, 1998. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended April 8, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 8, 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.