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Expired Canadian patentCanada

Benzofuran derivatives

CA 1281325 C · Owner: Merck Frosst Canada Inc. · Inventors: Belanger, Patrice C.; Scheigetz, John; Rokach, Joshua

CIPO record

Overview

Drawings and full text

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

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Abstract From the Canadian patent

Benzofuran derivatives pharmaceutical, compositions and methods of treatment are disclosed. These compounds are useful as inhibitors of mammalian leukotriene biosynthesis. As such, these compounds are useful therapeutic agents for treating allergic conditions, asthma, cardiovascular disorders inflammation. The compounds are also useful as analgesics and as cytoprotective agents.

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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.
FiledJune 14, 1985
GrantedMarch 12, 1991
Term endedMarch 12, 2008
Patent numberCA 1281325 C
Classification (IPC)C07D307/78 +2 more

Timeline

Timeline From CIPO dates

19861989199219951998200120042007Application filedJune 14, 1985Patent 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.