Aqueous coating composition
CA 2124235 C · Owner: Craun, Gary P. · Inventors: Craun, Gary P.; Yancey, Denise E.; Bode, Daniel
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An aqueous dispersed, low VOC coating containing a polymeric binder comprises an addition copolymer grafted epoxy-polyester terpolymer. The graft terpolymer comprises by weight between 1% and 70% unsaturated polyester 5% and, 80% epoxy resin, and 5% and 70% addition copolymer where, the terpolymer has an Acid Number above about 30 and is dispersed into water with a volatile base.
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 25, 1994 and granted January 19, 1999. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended May 25, 2014.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 25, 2016.
- 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.