N-hydrocarbyloxy derivatives of hindered amine-substituted s-triazines
CA 2012500 C · Owner: Novartis Ag · Inventors: Galbo, James P.; Ravichandran, Ramanathan
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
N-Hydrocarbyloxy derivatives of poly(2,2,6,6-tetraalkylpiperidin-4-yl)-1.3.5-triazines corresponding to the formulae I, II or III, wherein T is, (see formula I II, or III), wherein T is (see formula IV) are effective light stabilizers in a wide variety of substrate systems.
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 March 19, 1990 and granted February 1, 2000. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended March 19, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 19, 2012.
- 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.