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Expired Canadian patentCanada

Carbacyclin analogs

CA 1313670 C · Owner: Aristoff, Paul Adrian · Inventors: Aristoff, Paul Adrian; Kelly, Robert Charles; Nelson, Norman Allan

CIPO record

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Abstract From the Canadian patent

3893-f, ABSTRACT, The present specification provides novel analogs of carbacyclin (CBA2), 6a-carba-prostacyclin (6a-carba-PGI2) which have pronounced, prostacyclin-like pharmacological activity e.g. as platelet anti-, aggregatory agents. Specifically the novel chemical analogs of CBA2 are those substituted by fluoro (C-5), alkyl (C-9) interphenylene, (C-5), methano (C-6a,9) and an additional (olefinic) valence bond (C-6a,9). Further provided are benzindene analogs of CBA2 and substituted forms thereof, i.e. 9-deoxy-2',9-methano (or 2',9-metheno)- 3-oxa-4,5,6-trinor-3,7-(1',3'-interphenylene)-PCFI compounds. Also provided are a variety of novel chemical intermediates e.g. substi-, tuted …

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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 February 16, 1993. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended February 16, 2010.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledJanuary 16, 1981
GrantedFebruary 16, 1993
Term endedFebruary 16, 2010
Patent numberCA 1313670 C
Classification (IPC)C07C49/42 +2 more

Timeline

Timeline From CIPO dates

1982198519881991199419972000200320062009Application filedJan 16, 1981Patent grantedFeb 16, 1993Term endedFeb 16, 2010

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