Thermosetting coating composition and method of forming coating therefrom
CA 2076500 A1 · Owner: Nippon Paint Co. Ltd. · Inventors: Ozaki, Makoto; Hori, Hitoshi; Niimi, Eizo
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The thermosetting paint composition containing (a) a hydroxyl group containing resin; (b) an acid catalyst; (c) a highly alkyl-etherified melamine resin capable of forming carbonium ions in the presence of the acid catalyst; and (d) a blocked polyisocyanate having active hydrogen at a baking temperature of a wet coated layer, the active hydrogen being substitutable with the carbonium ions formed from the highly alkyl-etherified melamine resin, the amount of the acid catalyst being on a solid, basis, 0.3-5 weight % based on the total amount of the resin components.
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 August 20, 1992. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended August 20, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by August 20, 2014.
- 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.