Canadian application, no grantCanada
Polyurethanes foams
CA 2084808 A1 · Owner: Maretti, Guido · Inventors: Maretti, Guido
Overview
Drawings and full text
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Process for preparing a flexible foam from a polyisocyanate water as blowing agent and an isocyanate-reactive composition comprising a polyol with a low ethylene-oxide (EO) content a, polyol with a high EO content and an amine chain extender/ cross-linker.
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 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.
FiledDecember 8, 1992
GrantedNo grant recorded
Term endedDecember 8, 2012
Patent numberCA 2084808 A1
Classification (IPC)C08G18/48 +2 more
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.