Canadian application, no grantCanada
Flame retardant flexible polyurethane foam compositions
CA 2025720 A1 · Owner: Rose, Richard S. · Inventors: May, David E.; Rose, Richard S.
Overview
Drawings and full text
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Flame retardant additive compositions for flexible polyurethane foam comprise pentabromodiphenyl ether and non-mutagenic halogenated alkyl phosphate ester mixtures of the formula:, (I), (II), . (III)
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 September 19, 1990. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended September 19, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by September 19, 2012.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledSeptember 19, 1990
GrantedNo grant recorded
Term endedSeptember 19, 2010
Patent numberCA 2025720 A1
Classification (IPC)C08L75/04 +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.