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Expired Canadian patentCanada

3'-deamino-4'-deoxy-4'-amino anthracyclines

CA 1338712 C · Owner: Pezzoni, Gabriella · Inventors: Bargiotti, Alberto; Grandi, Maria; Pezzoni, Gabriella

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

Anthracycline glycoside compounds of general formula I wherein NH2 ? means that the NH2 substituent may be in a planar or axial position, R1 is hydrogen or a hydroxy group and R2 is hydrogen wherein R1 is hydrogen or a hydroxy group and R2 is hydrogen or a methoxy group, and their pharmaceutically acceptable acid addition salts, are antitumor agents.

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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 12, 1996. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended November 12, 2013.
  • 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 9, 1989
GrantedNovember 12, 1996
Term endedNovember 12, 2013
Patent numberCA 1338712 C
Classification (IPC)C07H15/25 +2 more

Timeline

Timeline From CIPO dates

19901993199619992002200520082011Application filedFeb 9, 1989Patent grantedNov 12, 1996Term endedNov 12, 2013

Sources & verification

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