Powder coating compositions containing an epoxide resin and an acid hardener
CA 1134542 A · Owner: Ciba-Geigy Investments Ltd. · Inventors: Bagga, Madan M.; Moss, Noel S.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Powder coating compositions comprises an epoxide resin and a carboxylic acid of formula, where, R1 represents a phenylene or naphthylene group or a group comprising 2 or 3 phenylene radicals linked by one or two carbon-carbon bonds, ether oxygen atoms, sulfur atoms or sulfonyl, sulfoxide, carbonyl or alkylene groups R2 represents a saturated alkyl group, a benzenoid group or an aralkyl group, and, both n are the same and represent zero or 1.
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 October 26, 1982. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended October 26, 1999.
- 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.