Herbicidal compositions
CA 1080498 A · Owner: American Cyanamid Company · Inventors: Feeny, Richard W.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A composition for the control of wild oats and broadleaf weeds or undesirable grass plants, comprising a 1,2-dialkyl-3,5-diphenylpyrazolium wild oat herbicide of formula I, (I) wherein R1 is methyl; R2 is alkyl C1-C4; Y,Y' Z and Z' each independently, represent halogen hydrogen, methyl or methoxy; X is an anion having a charge of 1 to 3; and m is 1, 2 or 3; with the proviso that only one phenyl ring is substituted on the carbon para to the pyrazolium ring with a substituent other than hydrogen, in combination with a broadleaf weed or grass herbicide selected from the group consisting of a phenylcarbamate substituted urea, sub-, stituted hydroxybenzonitrile substituted symmetrical triazine, …
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 July 1, 1980. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended July 1, 1997.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
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.