Expired Canadian patentCanada
Process for the preparation of aminonitriles useful for the preparation of herbicides
CA 1211125 A · Owner: Basf Aktiengesellschaft · Inventors: Stepek, Walter J.; Nigro, Matthew 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
The present invention is a process for the preparation of certain substituted aminonitriles useful as intermediates for the preparation of certain herbicidal oxo-imidazolinylpyridine, quinoline and benzen derivatives.
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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 September 9, 1986. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended September 9, 2003.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledMarch 26, 1984
GrantedSeptember 9, 1986
Term endedSeptember 9, 2003
Patent numberCA 1211125 A
Classification (IPC)C07D401/04 +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.