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Expired Canadian patentCanada

Epinine esters, method for their preparation and related pharmaceutical compositions

CA 1113117 A · Owner: Simes Societa Italiana Medicinali E Sintetici S.P.A. · Inventors: Ferrari, Giorgio; Casagrande, Cesare

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Abstract From the Canadian patent

Novel cardiocirculatory analeptics are prepared, which are epinine esters as obtained by reacting epinine (N-methyldopamine) with branchedchain aliphatic carboxylic acids. Exemplary members are 3,4-di-O-butyrylepinine and 3,4-di-O-pivaloylepinine. These medicaments are effective also by the oral route of administration, contrary to the hitherto commonly used dopamine derivatives which are rapidly destroyed by metabolization when administered orally.

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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 November 24, 1981. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended November 24, 1998.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledAugust 4, 1977
GrantedNovember 24, 1981
Term endedNovember 24, 1998
Patent numberCA 1113117 A
Classification (IPC)C07C217/00 +2 more

Timeline

Timeline From CIPO dates

1978198119841987199019931996Application filedAug 4, 1977Patent grantedNov 24, 1981Term endedNov 24, 1998

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