Expired Canadian patentCanada
Herbicidal pyridine compounds
CA 1205805 A · Owner: Imperial Chemical Industries Plc · Inventors: Cartwright, David
Overview
Drawings and full text
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Herbicidal pyridine compounds of the general formula are active against grasses.
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 June 10, 1986. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended June 10, 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.
FiledAugust 11, 1978
GrantedJune 10, 1986
Term endedJune 10, 2003
Patent numberCA 1205805 A
Classification (IPC)C07D213/64 +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.