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Expired Canadian patentCanada

2-dihalogenomethylene-3-halogeno-3-carbalkoxy-5- oxopyrrolidines, process for their manufacture and their use as fungicidal, bactericidal and algicidal compositions

CA 1161050 A · Owner: Hoechst Aktiengesellschaft · Inventors: Sachse, Burkhard; Matterstock, Karl; Hartz, Peter

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Abstract From the Canadian patent

2-Dihalogenomethylene-3-halogeno-3-carboalkoxy-5-oxopyrrolidines of the formula I, (I), wherein R1 is hydrogen or C1-4alkyl, R- is hydrogen C1-4alkyl C1-4alkoxycarbonylmethyl cyc-, lohexyl benzyl C1-4alkylphenyl, halogenophenyl nitrophenyl carboalkoxyphenyl C1-4alkoxyphenyl trihaloge-, nomethylphenyl or C1-4alkoxycarbonylphenyl and X is halogen, a process for their manufacture and their use as pesticidal compositions.

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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 January 24, 1984. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended January 24, 2001.
  • 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 11, 1980
GrantedJanuary 24, 1984
Term endedJanuary 24, 2001
Patent numberCA 1161050 A
Classification (IPC)C07D207/36 +2 more

Timeline

Timeline From CIPO dates

1981198419871990199319961999Application filedJuly 11, 1980Patent grantedJan 24, 1984Term endedJan 24, 2001

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