Expired Canadian patentCanada
N-aryltetrahydrophthalimide compounds
CA 1329596 C · Owner: Meyer, Norbert · Inventors: Plath, Peter; Rueb, Lothar; Schwalge, Barbara
Overview
Drawings and full text
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
s N-aryltetrahydrophthalimids compounds of the general formula I, I, where n R1, Y, R2 and R3 have the meanings stated in the claims and description, and a method for controlling undesirable plant growth.
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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 May 17, 1994. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended May 17, 2011.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledFebruary 27, 1989
GrantedMay 17, 1994
Term endedMay 17, 2011
Patent numberCA 1329596 C
Classification (IPC)C07D405/14 +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.