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Expired Canadian patentCanada

Medicinal composition and its use as antidepressive agent

CA 1102242 A · Owner: Hoechst Aktiengesellschaft · Inventors: Stammberger, Willi; Schmitt, Karl; Hoffmann, Irmgard

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Abstract From the Canadian patent

Abstract of the disclosure:, Medicinal composition containing compounds of the general formula I, (I), in which R1, R3 and R4 which may be identical or different, and represent hydrogen atoms or lower alkyl or aralkyl groups and, R2 and R?, which may be identical or different represent hydrogen, or halogen atoms, hydroxy or trifluoromethyl groups or lower alkyl alkoxy or aralkoxy groups, it also being possible that that two adjacent radicals form an alkylene-dioxy radical and R5 represents, a hydrogen or halogen atom a hydroxy, trifluoromethyl or nitro, group or a lower alkyl alkoxy or aralkoxy radical, and their, salts with acids (active substance A) and …

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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 June 2, 1981. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended June 2, 1998.
  • 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 31, 1978
GrantedJune 2, 1981
Term endedJune 2, 1998
Patent numberCA 1102242 A
Classification (IPC)A61K31/55

Timeline

Timeline From CIPO dates

1979198119831985198719891991199319951997Application filedMay 31, 1978Patent grantedJune 2, 1981Term endedJune 2, 1998

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