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Expired Canadian patentCanada

Diamine derivatives, their preparation and their use as fungicides

CA 1213518 A · Owner: Basf Aktiengesellschaft · Inventors: Meyer, Norbert; Buschmann, Ernst; Ammermann, Eberhard

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Abstract From the Canadian patent

Diamine derivatives of the formula, I, where R1 is unsubstituted or substituted alkyl unsub-, stituted or substituted aryl or aralkyl bicycloalkyl, alkoxy, acyl or halogen, n is 0 1, 2 or 3, R2 is alkyl, alkenyl or alkoxy A is unsubstituted or substituted, alkylene or unsubstituted or substituted cycloalkylene R3, R4 and R5 are each unsubstituted or substituted alkyl alkenyl, alkynyl or unsubstituted or substituted benzyl or R3 and R4, together with A and the two nitrogen atoms bonded to A, form an unsubstituted or substituted piperazine or perhydrodiazepine ring, or R4 and R5 together, with the nitrogen atom, form an unsubstituted or substituted heterocyclic ring, R6 is alkyl, alkenyl …

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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 4, 1986. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended November 4, 2003.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledMay 12, 1983
GrantedNovember 4, 1986
Term endedNovember 4, 2003
Patent numberCA 1213518 A
Classification (IPC)A01N33/12 +2 more

Timeline

Timeline From CIPO dates

1984198619881990199219941996199820002002Application filedMay 12, 1983Patent grantedNov 4, 1986Term endedNov 4, 2003

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