Phenolic corrosion inhibitors for coating materials
CA 1294774 C · Owner: Ciba-Geigy Ag · Inventors: Braig, Adalbert
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Phenolic corrosion inhibitors for coating materials Abstract, Compounds of the formula I, I in which R, R1, R2, R3, R4 and R5 are as defined in claim 1 are good corrosion inhibitors for organic materials especi-, ally for coating materials. They can at the same time also act as antioxidants and light stabilizers.
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
- Granted January 28, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended January 28, 2009.
- 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.