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Expired Canadian patentCanada

Imidazo-isoquinoline and imidazo-thienopyridine compounds

CA 1262545 C · Owner: Roos, Otto · Inventors: Hinzen, Dieter; Arndts, Dietrich; Lehr, Erich

CIPO record

Overview

Drawings and full text

Its claims, description and drawings are in the Canadian Patents Database.

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Abstract From the Canadian patent

Astract, Compounds of general formula, I (A, R5 and R being described in detail in the specification) and acid addition salts thereof are suitable for use as pharmaceutical substances particularly in cardioprotective pharmaceutical preparations.

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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 October 31, 1989. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended October 31, 2006.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledMarch 19, 1986
GrantedOctober 31, 1989
Term endedOctober 31, 2006
Patent numberCA 1262545 C
Classification (IPC)C07D471/04 +2 more

Timeline

Timeline From CIPO dates

1987198919911993199519971999200120032005Application filedMarch 19, 1986Patent grantedOct 31, 1989Term endedOct 31, 2006

Sources & verification

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