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Expired Canadian patentCanada

Fungicidal 1,2-dichlorocyanovinyl compounds

CA 1111863 A · Owner: Stauffer Chemical Company · Inventors: Felix, Raymond A.

CIPO record

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Abstract From the Canadian patent

Novel biocidal compounds have the general structural formula, wherein n is 0, 1, or 2 and R is alkyl alkyl-, carbalkoxy, cyclohexyl, halophenyl benzyl, N,N-di-lower alkyl carbamoyl, hexamethyleneimino carbonyl, pyrimidyl, lower alkyl substituted pyrimidyl, benzoitazole, lower alkyl substituted imidazole, benzothiazole and O,O-di-lower alkyl thiophosphoryl ; with the proviso that when n is O, R is other than alkyl or cyclohexyl.

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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 November 3, 1981. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended November 3, 1998.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledOctober 15, 1980
GrantedNovember 3, 1981
Term endedNovember 3, 1998
Patent numberCA 1111863 A
Classification (IPC)C07C323/60 +2 more

Timeline

Timeline From CIPO dates

198119831985198719891991199319951997Application filedOct 15, 1980Patent grantedNov 3, 1981Term endedNov 3, 1998

Sources & verification

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