Expired Canadian patentCanada
Ageing-resistant polyamide blends
CA 1249685 A · Owner: Bayer Aktiengesellschaft · Inventors: Merten, Josef; Haupt, Heinrich; Lindner, Christian
Overview
Drawings and full text
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Ageing-resistant polyamide blends", A B S T R A C T The invention relates to moulding compositions of ageing-resistant polyamide blends consisting of polyamides and grafted acrylates.
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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 January 31, 1989. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended January 31, 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.
FiledSeptember 20, 1985
GrantedJanuary 31, 1989
Term endedJanuary 31, 2006
Patent numberCA 1249685 A
Classification (IPC)C08L77/00 +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.