Stabilizer mixtures
CA 2408093 A1 · Owner: Ciba Specialty Chemicals Holding Inc. · Inventors: Gugumus, Francois
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A stabilizer mixture containing the components (A) and (B) wherein component (A) is for example a compound of the formula (A-1) wherein A1 is hydrogen or C1-C4alkyl, A2 is a direct bond or C1-C10alkylene and n1 is a number from 2 , to 50; and component (B) is formed by two different low molecular weight sterically hindered amine compounds containing a group of the formula (I) and (II); with the proviso that components (A) and (B) are different.
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 May 22, 2001. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended May 22, 2021.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 22, 2023.
- 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.