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Expired Canadian patentCanada

13.beta.-MILBEMYCIN DERIVATIVES AND THEIR USE AS PESTICIDES

CA 1284638 C · Owner: Ciba-Geigy Ag · Inventors: Frei, Bruno; O'Sullivan, Anthony Cornelius

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Abstract From the Canadian patent

Pesticides, Abstract, Novel compounds of the formula (I), in which R1 is a hydrogen or a silyl or acyl group R2 is, methyl, ethyl, isopropyl or sec.-butyl and R is hydrogen unsubstituted or substituted, linear or branched-chain C1-C18-alkyl groups, unsubstituted or substituted cycloaliphatic groups having 3 to 10 carbon atoms unsubstituted or, substituted C2-C6-alkenyl groups unsubstituted or substi-, tuted C2-C6-alkynyl groups unsubstituted or substituted, phenyl groups or unsubstituted or substituted benzyl groups. The active compounds possess advantageous pesticidal properties. They are particularly suitable for the control of pests in agriculture and the management of stored products.

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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 June 4, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended June 4, 2008.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledJune 29, 1987
GrantedJune 4, 1991
Term endedJune 4, 2008
Patent numberCA 1284638 C
Classification (IPC)C07D493/22 +2 more

Timeline

Timeline From CIPO dates

1988199119941997200020032006Application filedJune 29, 1987Patent grantedJune 4, 1991Term endedJune 4, 2008

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