Expired Canadian patentCanada
Polyurethane foams prepared from condensation products of amines, epihalohydrins and alkylene oxides
CA 1114099 A · Owner: Basf Wyandotte Corporation · Inventors: Patton, John T. Jr.; Moore, Richard A.; Pizzini, Louis C.
Overview
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Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Abstract of the Disclosure, Oxyalkylated condensation products prepared from aliphatic and aromatic amines, epihalohydrin and alkylene oxides used in polyurethane foams. -1-
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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
- Granted December 8, 1981. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended December 8, 1998.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledJune 13, 1978
GrantedDecember 8, 1981
Term endedDecember 8, 1998
Patent numberCA 1114099 A
Classification (IPC)C08G18/32 +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.