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Expired Canadian patentCanada

3-phenyl-7-benzyl-3,3a,4,5,6,7-hexahydro-2h-pyrozolo(4,3-c) pyridino compound

CA 1057757 A · Owner: E.R. Squibb And Sons · Inventors: Krapcho, John; Turk, Chester F.

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Abstract From the Canadian patent

Compounds of the formula, wherein R is , or , wherein X is, hydrogen, chloro, fluoro alkyl of from 1 to 4 carbon atoms, alkoxy of from 1 to 4 carbon atoms or trifluoromethyl pro-, vided each R may be the same or different; R1 and R2 are hydrogen, alkyl of from 1 to 4 carbon atoms hydroxy lower, alkyl wherein the alkyl group has from 1 to 4 carbon atoms alkanoyl of from 1 to 4 carbon atoms or X-substituted phenyl alkyl wherein X and alkyl have the same meaning as above and, the N-oxides and pharmaceutically acceptable acid addition salts thereof have been found to possess antiinflammatory 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 July 3, 1979. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended July 3, 1996.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Filed—
GrantedJuly 3, 1979
Term endedJuly 3, 1996
Patent numberCA 1057757 A
Classification (IPC)C07D487/04 +2 more

Timeline

Timeline From CIPO dates

198019821984198619881990199219941996Patent grantedJuly 3, 1979Term endedJuly 3, 1996

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