Radiation-curing coating compositions
CA 2489731 C · Owner: Rische, Thorsten · Inventors: Feller, Thomas; Naujoks, Karin; Irle, Christoph
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Aqueous coating compositions comprising (I) at least one polyisocyanate (A), the polyisocyanate (A) selected from a non-blocked hydrophilically-modified polyisocyanate (A') and a blocked polyisocyanate (A"), (II) at least one polyurethane (B) which contains free-radically polymerizable groups and up to 0.53 mmol/g of groups containing , Zerevitinov-active hydrogen atoms wherein the polyurethane (B) is a , reaction product of (a) one or more polyisocyanates, (b1) one or more hydrophilicizing compounds containing one or more groups selected from nonionic groups ionic groups and , groups which become ionic groups upon neutralization (b2) one or more compounds containing free-radically …
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 June 4, 2003 and granted September 4, 2012. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended June 4, 2023.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 4, 2025.
- 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.