Expired Canadian patentCanada
Thermoplastic molding materials containing polymers with polyphenylene ether groups and styrene polymers
CA 1184340 A · Owner: Basf Aktiengesellschaft · Inventors: Hambrecht, Juergen; Brandstetter, Franz; Naarmann, Herbert
Overview
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Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Thermoplastic molding materials which contain styrene polymers and polyphenylene ethers whose phenolic hydroxyl groups have been reacted with reactive copolymers.
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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 March 19, 1985. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended March 19, 2002.
- 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 2, 1981
GrantedMarch 19, 1985
Term endedMarch 19, 2002
Patent numberCA 1184340 A
Classification (IPC)C08G81/02
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.