Coating composition
CA 2004178 A1 · Owner: Kasawa, Susumu · Inventors: Kasawa, Susumu; Ito, Hiroshi; Takechi, Sonoko
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention concerns a coating composition comprising (A) an acrylic resin having a glass transition point of -30°C 20°C and a hydroxyl value of 100 300, (B) a lower-alcoholmodified melamine resin having a mononuclear content of 40% or more and an etherification degree of 4 or more and an acid catalyst, the ratio of (A)/(B) being 80/20 40/60 in terms of solid weight ratio and the content of (C) being 0.2 3% by weight of the total solid of the composition. The present coating composition is specifically useful as a top coat for automobile bodies and the like.
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 November 29, 1989. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended November 29, 2009.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 29, 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.