Expired Canadian patentCanada
Polyphenylene ether resin compositions containing a diphenylamine
CA 1085539 A · Owner: General Electric Company · Inventors: Katchman, Arthur
Overview
Drawings and full text
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Novel stabilized compositions of a polyphenylene ether and an alkenyl aromatic resin are disclosed which include a minor amount of a diphenylamine.
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 September 9, 1980. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended September 9, 1997.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledMay 27, 1977
GrantedSeptember 9, 1980
Term endedSeptember 9, 1997
Patent numberCA 1085539 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.