Expired Canadian patentCanada
Flame retardant poly(aryl ketone)
CA 1248275 A · Owner: Amoco Corporation · Inventors: Robeson, Lloyd M.
Overview
Drawings and full text
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Described herein is a flame retardant molding composition comprising a particular poly(aryl ketone)and a flame retardant additive which is a metal salt of an aromatic sulfonic acid.
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
- Granted January 3, 1989. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended January 3, 2006.
- 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 15, 1984
GrantedJanuary 3, 1989
Term endedJanuary 3, 2006
Patent numberCA 1248275 A
Classification (IPC)C08L71/12 +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.