Coating agent- the manufacture and use thereof
CA 2275219 A1 · Owner: Schubert, Walter · Inventors: Duecoffre, Volker; Flosbach, Carmen; Herrmann, Friedrich
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention relates to a coating agent for multi-layer enamel with a bonding agent composition containing: a) 25-75 wt. % carboxy-functional (meth)acryl copolymers and/or carboxy-functional polyesters whose carboxy-functionality , corresponds to an acid number ranging from 15-300 mg KOH/g; b) 25-75 wt. % epoxide functionalized cross-linking agent resins of which at least one is a (meth)acryl copolymer produced by additionally using a tertiary butyl (meth)acrylate; c) 0-60 wt % polyols with at least two hydroxyl functions in the molecule; d) 0-40 wt % constituents cross-linking with hydroxyl groups and thus forming ether and/or a triazine-based cross-linking agent; e) 0-40 wt. % …
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 December 11, 1997. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended December 11, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 11, 2019.
- 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.