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Expired Canadian patentCanada

Substituted phenyl (thiono) carbamates, herbicidal compositions containing the same as active ingredient and method of controlling weeds

CA 1186309 A · Owner: Kuraray Co. Ltd. · Inventors: Hosogai, Takeo; Nishida, Takashi; Konnai, Makoto

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Abstract From the Canadian patent

The invention provides novel substituted phenyl (thiono)carbamates capable of effectively controlling broad-leaved annual weeds and annual weeds belonging to the families Gramineae and Cyperaceae such as wild Echinochloa species monochoria, toothcup and umbrella plant and a method of controlling weeds using these (thiono)carbamates. The (thiono)carbamates are substantially nonphytotoxic to useful crop plants such as the paddy rice plant. The novel compounds can be, ---?--see next page

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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 April 30, 1985. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended April 30, 2002.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledJuly 28, 1982
GrantedApril 30, 1985
Term endedApril 30, 2002
Patent numberCA 1186309 A
Classification (IPC)C07D207/20 +2 more

Timeline

Timeline From CIPO dates

1983198519871989199119931995199719992001Application filedJuly 28, 1982Patent grantedApril 30, 1985Term endedApril 30, 2002

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Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.