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Expired Canadian patentCanada

Pesticidal compounds, compositions and methods

CA 1159841 A · Owner: Boots Company Limited (The) · Inventors: Palmer, Bryan H.; Giles, David P.; Kozlik, Antonin

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

Novel compounds are described which are substituted benzophenone hydrazones. They have pesticidal activity especially against insects and acarids and pesticidal, compositions and methods are described. Methods of making the compounds, and novel intermediates are also described.

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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 3, 1984. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended January 3, 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.
FiledAugust 28, 1980
GrantedJanuary 3, 1984
Term endedJanuary 3, 2001
Patent numberCA 1159841 A
Classification (IPC)C07D213/53 +2 more

Timeline

Timeline From CIPO dates

1981198419871990199319961999Application filedAug 28, 1980Patent grantedJan 3, 1984Term endedJan 3, 2001

Sources & verification

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