Stabilizer mixtures for the protection of polymer substrates
CA 2481999 A1 · Owner: Webster, Joseph Reni · Inventors: Gronmaier, Ernst; Avar, Lajos; Kroehnke, Christoph
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A stabilizer mixture for one or more compounds of the general formula (1) and (1A) but preferably (1), wherein the groups R independently stand for an alkylcycloalkyl-, aralkyl- or aryl-rest whereas the aromatic ring system may be optionally substituted by one or more groups R' which may be identical or different and which groups R' can be an aryla saturated or unsaturated , alkyl-, aralkyl- or cycloalkyl-group as well as halogen an amino-, aminoalkyl-, aminocycloalkylcyano-, thiocyano- or nitrogroup.and a UV-absorber hindered amine stabilizer, sterically hindered phenol organo-phosphite, organophosphonite, organophosphine or mixtures thereof.The present invention is useful in the …
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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 May 12, 2003. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended May 12, 2023.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 12, 2025.
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Timeline
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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.