Compounds containing substituted piperidine groups for use as stabilizers for organic materials
CA 1337987 C · Owner: Novartis Ag · Inventors: Cantatore, Giuseppe; Vignali, Graziano
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Compounds containing substituted piperidine groups of the general for-mula (I), (I), in which n is e.g. 1 2 or 3, R1 is e.g. hydrogen or methyl, R2 is e.g. ethylene or trimethylene and if n is 1 A is e.g. hydrogen, -COOC18H37-n, or -COC11H23-n if n is 2, A is e.g. -CO-(CH2)4-OC- or and if n is 3, A is e.g. , are effective stabilizers for organic materials, especially synthetic polymers which are subject to, the action of light heat and oxidation.
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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 January 23, 1996. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended January 23, 2013.
- 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.