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Expired Canadian patentCanada

Substituted 4-phenyl-imidazolines, their acid addition salts and process for their production

CA 1069514 A · Owner: Boehringer Ingelheim G.M.B.H. · Inventors: Haarmann, Walter; Reichl, Richard; Kummer, Werner

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Abstract From the Canadian patent

This invention relates to novel substituted 4-phenyl imidazolines having interesting pharmacological properties. These compounds have the general formula, I, (wherein R1 represents a fluorine chlorine or bromine atom or a methylgroup; R2 and R3 which may be the same or different, each represents a hydrogen or chlorine atom or a methyl group; R4 represents a hydrogen atom or a methyl or ethyl group; and R5 and R6 which may be the same or, different, each represents a methyl or ethyl group or an alkoxyalkyl group containing from 2 to 4 carbon atoms, or taken together with the nitrogen atom to which they are attached, R5 and R6 form a pyrrolidino piperidino, morpholino, hexamethyleneimino …

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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 January 8, 1980. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended January 8, 1997.
  • 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—
GrantedJanuary 8, 1980
Term endedJanuary 8, 1997
Patent numberCA 1069514 A
Classification (IPC)C07D403/12 +2 more

Timeline

Timeline From CIPO dates

198119831985198719891991199319951997Patent grantedJan 8, 1980Term endedJan 8, 1997

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