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Expired Canadian patentCanada

Ergoline derivatives and acid addition salts thereof

CA 1292736 C · Owner: Ohno, Sachio · Inventors: Nagasaka, Mitsuaki; Mizukoshi, Kiyoshi; Ban, Takao

CIPO record

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Abstract From the Canadian patent

Novel ergoline derivatives and acid addition salts thereof are disclosed. These ergoline derivatives possess excellent anti-hypertensive activity, vasodilating activity anti-ulcer activity, gastric secretion inhibitory activity brain metabolism improving activity, anti-depressive activity and dopamine-like activity, and therefore, are, useful for prevention and treatment of various diseases such as hypertension, a wide variety of vein disorders peptic ulcer, brain absormality, depression Parkinson's, disease, high prolactin blood disease etc.

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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 December 3, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended December 3, 2008.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledFebruary 19, 1986
GrantedDecember 3, 1991
Term endedDecember 3, 2008
Patent numberCA 1292736 C
Classification (IPC)C07D457/02

Timeline

Timeline From CIPO dates

19871990199319961999200220052008Application filedFeb 19, 1986Patent grantedDec 3, 1991Term endedDec 3, 2008

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