Expired Canadian patentCanada
Fluorophenoxyphenoxypropionates and derivatives thereof
CA 1248943 A · Owner: The Dow Chemical Company · Inventors: Rogers, Richard B.; Gerwick, B. Clifford, Iii
Overview
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Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Novel fluorophenoxyphenoxypropionates and derivatives thereof possess herbicidal activity selectively in the presence of broadleaf crops. Preemergent and postemergent applications are contemplated.
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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 January 17, 1989. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended January 17, 2006.
- 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 30, 1984
GrantedJanuary 17, 1989
Term endedJanuary 17, 2006
Patent numberCA 1248943 A
Classification (IPC)C07C59/70 +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.