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Expired Canadian patentCanada

Method of reducing tissue damage associated with ischemia

CA 2198536 C · Owner: Beyer, Thomas A. · Inventors: Beyer, Thomas A.; Mylari, Banavara L.; Tracey, Wayne R.

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

Disclosed is a pharmaceutical composition for reducing tissue damage resulting from ischemia in a patient which composition comprises an effective amount of a sorbitol dehydrogenase inhibitor, together with a pharmaceutically acceptable diluent or carrier. The sorbitol dehydrogenase inhibitor is for example a substituted pyrimidine compound such as 4-4-(N,N-dimethylsulfamoyl)piperazino-2-hydroxymethylpyrimidine.

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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 February 26, 1997 and granted June 20, 2000. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended February 26, 2017.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by February 26, 2019.
  • 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 26, 1997
GrantedJune 20, 2000
Term endedFebruary 26, 2017
Patent numberCA 2198536 C
Classification (IPC)A61K31/50 +1 more

Timeline

Timeline From CIPO dates

1998200020022004200620082010201220142016Application filedFeb 26, 1997Patent grantedJune 20, 2000Term endedFeb 26, 2017

Sources & verification

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