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Expired Canadian patentCanada

2,3,5,6-tetrafluorobenzyl (+)1r-trans-2,2-dimethyl -3-(2,2-dichlorovinyl)-cyclopropanecarboxylate

CA 1312876 C · Owner: Naumann, Klaus · Inventors: Behrenz, Wolfgang; Naumann, Klaus

CIPO record

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

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Abstract From the Canadian patent

2,3,5,6-Tetrafluorobenzyl (+)1R-trans-2,2-dimethyl- 3-(2,2-dichlorovinyl)-cyclopropanecarboxylate A B S T R A C T, The novel compound 2,3,5,6-Tetrafluorobenzyl (+)1Rtrans-2,2-dimethyl-3-(2,2-dichlorovinyl)-cyclopropanecarboxylate of the formula, is highly active insecticidally.

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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 19, 1993. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended January 19, 2010.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledFebruary 17, 1988
GrantedJanuary 19, 1993
Term endedJanuary 19, 2010
Patent numberCA 1312876 C
Classification (IPC)C07C69/74 +1 more

Timeline

Timeline From CIPO dates

19891992199519982001200420072010Application filedFeb 17, 1988Patent grantedJan 19, 1993Term endedJan 19, 2010

Sources & verification

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