Curable epoxide resin compositions
CA 2000761 C · Owner: Bagga, Madan M. · Inventors: Bagga, Madan M.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Curable compositions comprise, (A) a polyglycidyl ether of a polyhydric phenol (B) a polyglycidyl ether of a polyhydric alcohol (C) a nitrogen-containing latent hardener for epoxide resins and, (D) as cure accelerator dispersed as a powder in the composition, a solid solution of a polymeric phenol with an aliphatic polyamine having two or more amine groups each of the, amine groups being tertiary and at least two of the amine groups being dimethylamino groups. The compositions are useful as adhesives sealants, laminating resins and coatings.
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 October 16, 1989 and granted November 16, 1999. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended October 16, 2009.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 16, 2011.
- 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.