Expired Canadian patentCanada
Method and composition for enhancing the insecticidal activity of certain organophosphorus compounds
CA 1233413 A · Owner: The Dow Chemical Company · Inventors: Devries, Donald H.; Costales, Mark J.; Reifschneider, Walter
Overview
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Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The insecticidal activity of certain pyridinyl phosphorus compounds is enhanced by the admixture therewith of certain 2,5,6-trisubstituted-4-pyrimidinyl phosphoramidates or phosphoramidothioates.
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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 1, 1988. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended March 1, 2005.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledDecember 3, 1984
GrantedMarch 1, 1988
Term endedMarch 1, 2005
Patent numberCA 1233413 A
Classification (IPC)A01N57/16 +1 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.