Stable aqueous dispersions of non-ionic blocked polyisocyanates
CA 2505971 A1 · Owner: Conti, Dario · Inventors: Conti, Dario; Di Cosmo, Anna; Li Bassi, Giuseppe
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention relates to stable aqueous dispersions of non-ionic blocked polyisocyanate obtained from the reaction of a polyisocyanate a , blocking agent and a non-ionic alkoxylated diol and to the process for their s preparation; the invention also relates to the use of these aqueous dispersions in textile printing pastes and in the oil~and/or water-repellent finishing of textiles.
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 November 28, 2003. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended November 28, 2023.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 28, 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.