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Expired Canadian patentCanada

1,4-dihydro-2,6-dimethyl-4-(3-nitrophenyl)-3,5-pyridine-dicarboxylic acid ester, several processes for its preparation and its use as a peripheral vasodilator

CA 1070314 A · Owner: Bayer Aktiengesellschaft · Inventors: Meyer, Horst; Vater, Wulf; Stoepel, Kurt

CIPO record

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Abstract From the Canadian patent

A 1,4-DIHYDRO-2, 6-DIMETHYL-4-(3-NITROPHENYL)- 3,5-PYRIDINEDICARBOXYLIC ACID ESTER, SEVERAL PROCESSESS FOR ITS PREPARATION AND ITS USE AS A PERIPHERAL VASODILATOR, Astract of the Disclosure The invention provides a novel compound 1,4-dihydro-2, 6-dimethyl-4-(3-nitrophenyl)- 5-pyridine-, dicarboxylic acid isopropyl 2-propoxyethyl ester and processes for its preparation. In addition the invention, inclutes the provision of compositions containing the compound of the invention and methods for treating warmblooded animals for periphal perfusion disturbances.

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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 22, 1980. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended January 22, 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 22, 1980
Term endedJanuary 22, 1997
Patent numberCA 1070314 A
Classification (IPC)C07D211/90

Timeline

Timeline From CIPO dates

198119831985198719891991199319951997Patent grantedJan 22, 1980Term endedJan 22, 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.