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Expired Canadian patentCanada

Dihydropyrrole derivatives

CA 1084494 A · Owner: Ciba-Geigy Ag · Inventors: Bohner, Beat; Baumann, Marcus

CIPO record

Overview

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Its claims, description and drawings are in the Canadian Patents Database.

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Abstract From the Canadian patent

The present invention relates to novel 3,4-dimethyl-Zhydroxy-5-oxo-2,5-dihydropyrrole compounds substituted on the nitrogen atom, to processes for producing them to their use, in agricluture for combating animal and plant pests and also for regulating plant growth, and to compositions containing these novel pyrrole compounds. The novel 3,4-dimethyl-2-hydroxy-5-oxo-2,5-dihydropyrrole compounds substituted on the nitrogen stom correspond to the formula, wherein, A represents the hydroxyl group a halogen atom or an, O-acyl radical, and R represents an aryl radical, an aralkyl radical or an, heteroaromatic radical which has 5-6 ring members and which is bound by way of a carbon atom.

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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 August 26, 1980. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended August 26, 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.
FiledAugust 10, 1977
GrantedAugust 26, 1980
Term endedAugust 26, 1997
Patent numberCA 1084494 A
Classification (IPC)C07D207/38 +2 more

Timeline

Timeline From CIPO dates

1978198019821984198619881990199219941996Application filedAug 10, 1977Patent grantedAug 26, 1980Term endedAug 26, 1997

Sources & verification

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