Baths for electrophoretic lacquering capable of cathodic deposition with additives for enhancing surface appearance and the use of said additives in coating processes
CA 2080780 A1 · Owner: Hirtl, Johann · Inventors: Katzmann, Heinz-Peter; Klein, Klausjoerg; Hirtl, Johann
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Aqueous baths for electrophoretic lacquering containing binding agents capable of cathodic deposition and containing as additives for enhancing surface appearance, in particular as anti-cratering agents 0.1 to 3% by weight of one or several, (meth)acrylic copolymers with an amine number of 15 - 150 and an OH-number of 15 - 450, together with 0.1 to 2% by weight of one or several polyesters with .beta.-hydroxyalkyl ester groups, with an acid number of 0 to 3 and a weight average molecular weight of 1000 to 10000, and/or together with, 0.1 to 5% by weight of one or several homopolymers or copolymers of one or several alkylvinyl ethers with 1 - 5 carbon atoms in the alkyl residue with a, …
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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 December 8, 1992. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended December 8, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 8, 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
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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.