An aqueous coating agent and its use in lacquers
CA 2314684 A1 · Owner: Hoppe, Lutz · Inventors: Hoppe, Lutz; Poersch-Panke, Hans-Gunter
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A cellulose substance-containing lacquer emulsion prepared from a) 5 - 50 wt.% of cellulose substance, b) 5 - 50 wt.% of one or more hydroxyl group-containing lacquer resins c) 0.1 - 10 wt.% of polyisocyanates with more than one free isocyanate group d) 0.5 - 30 wt.% of plasticiser, e) 0.0 - 20 wt.% of emulsifier f) 0.0 - 45 wt.% of at least one organic solvent g) 10 - 65 wt.% of water, wherein the sum of a) to g) is always 100 wt.% characterised in that the , ratio by, weight of OH groups (from the lacquer resin) to NCO groups is 1 : 0.01 - 1.0 is, described.
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 July 28, 2000. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended July 28, 2020.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 28, 2022.
- 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.