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Expired Canadian patentCanada

Cycloalkylene azoles, processes for their production and use, and pharmaceutical preparations obtained therefrom

CA 2022682 C · Owner: Henderson, David · Inventors: Bohlmann, Rolf; Schneider, Martin; Henderson, David

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 disclosure relates to cycloalkylene azoles of general Formula I, (I), wherein, is a carbocyclic or carbopolycyclic group optionally carrying at least one alkyl substituent, X is the grouping , an oxygen or sulfur atom and, Y and Z, independently of each other are , or a, nitrogen atom, as well as their pharmaceutically compatible addition salts with acids as well as processes for production thereof. The compounds possess strongly aromataseinhibiting activity and are uitable for the preparation of medicinal agents. Methods for treating estrogen induced or stimulated tumors, male infertility, and impending cardiac infarction with these compounds are also provided as well as methods for …

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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

  • Filed August 3, 1990 and granted January 21, 1997. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended August 3, 2010.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by August 3, 2012.
  • 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 3, 1990
GrantedJanuary 21, 1997
Term endedAugust 3, 2010
Patent numberCA 2022682 C
Classification (IPC)C07D233/61 +2 more

Timeline

Timeline From CIPO dates

1991199319951997199920012003200520072009Application filedAug 3, 1990Patent grantedJan 21, 1997Term endedAug 3, 2010

Sources & verification

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