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Expired Canadian patentCanada

Lipoxygenase inhibitors

CA 1281329 C · Owner: Guindon, Yvan · Inventors: Atkinson, Joseph G.; Lau, Cheuk K.; Guindon, Yvan

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

Compounds of the Formula I: I, and pharmaceutically acceptable salts thereof are inhibitors of leukotriene biosynthesis. These compounds inhibit the mammalian 5-lipoxygenase enzyme, thus preventing the metabolism of arachidonic acid to the leukotrienes. These compounds are thus useful in the treatment of asthma, allergic disorders, inflammation, skin diseases and certain cardiovascular disorders.

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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 March 12, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended March 12, 2008.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledOctober 31, 1984
GrantedMarch 12, 1991
Term endedMarch 12, 2008
Patent numberCA 1281329 C
Classification (IPC)C07D307/78 +2 more

Timeline

Timeline From CIPO dates

19851988199119941997200020032006Application filedOct 31, 1984Patent grantedMarch 12, 1991Term endedMarch 12, 2008

Sources & verification

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