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Expired Canadian patentCanada

Benzo¬b pyranes and pyranopyridines, process for their production and their use

CA 1312866 C · Owner: Blarer, Stefan · Inventors: Blarer, Stefan

CIPO record

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Abstract From the Canadian patent

New compounds of formula I, I wherein the significances of substituents V T, W, R3 to R5, R9, R10, m, X, Y and Z are given in claim 1 and their N-oxides and their salts, processes for the production of the compounds of formula I, their N-oxides and their salts and their use in the, treatment of raised blood pressure in the treatment of vascular disorders and other disorders in which a reduction in tension of the smooth muscles is therapeutically usefull as well as in the, treatment of hair loss and baldness. Further the compounds are useful in the treatment of asthma and obstructive disorders of the respiratory system.

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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 19, 1993. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended January 19, 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.
FiledMay 13, 1988
GrantedJanuary 19, 1993
Term endedJanuary 19, 2010
Patent numberCA 1312866 C
Classification (IPC)C07D311/04 +2 more

Timeline

Timeline From CIPO dates

19891992199519982001200420072010Application filedMay 13, 1988Patent grantedJan 19, 1993Term endedJan 19, 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.