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Expired Canadian patentCanada

Mercaptocycloalkylcarbonyl and mercaptoarylcarbonyl dipeptides

CA 1269496 C · Owner: Weller, Harold N. Iii · Inventors: Gordon, Eric M.; Delaney, Norma G.; Weller, Harold N. Iii

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Abstract From the Canadian patent

Compounds of the formula wherein A is a cycloalkyl ring, a substituted cycloalkyl ring, a phenyl ring, or a substituted phenyl ring and, are various dipeptide groups are disclosed. The compounds possess angiotensin converting enzyme inhibition activity and depending upon the terminal amino acid may also possess enkephalinase inhibition activity.

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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 May 22, 1990. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended May 22, 2007.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledMay 24, 1985
GrantedMay 22, 1990
Term endedMay 22, 2007
Patent numberCA 1269496 C
Classification (IPC)C07D207/16 +2 more

Timeline

Timeline From CIPO dates

19861989199219951998200120042007Application filedMay 24, 1985Patent grantedMay 22, 1990Term endedMay 22, 2007

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