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Expired European patentEurope

Derivatives of pentacyclic alcaloids, method for their preparation, application in the synthesis of products of the eburnamonine group and pharmaceutical compositions

EP 0001021 B1 · Applicant: ROUSSEL-UCLAF

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Listed from its EPO record in Patent Yard's archive of European patents past their term. Its claims, description and drawings are in the EPO PDF and on Google Patents, and the Claude kit works from them.

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Why it's free to use

  • Filed June 30, 1978 and granted September 16, 1981. A European patent lasts at most 20 years from filing, so its term ended June 30, 1998.
  • A supplementary protection certificate, which can extend a medicine or crop-protection patent, adds at most five and a half years, so even that would have ended by December 30, 2003.
  • We check European rights only. A US or other national patent in its family could still be in force: check its family on Espacenet or Google Patents.
FiledJune 30, 1978
PublishedMarch 7, 1979
GrantedSeptember 16, 1981
Term endedJune 30, 1998
Application numberEP 78400046
Classification (CPC)C07D461/00

Timeline

Timeline From EPO dates

1979198119831985198719891991199319951997Application filedJune 30, 1978PublishedMarch 7, 1979Patent grantedSep 16, 1981Term endedJune 30, 1998

Sources & verification

Official EPO records

Full published documentClaims, description and drawings as a PDF.EPOEuropean Patent RegisterProcedure, status, file inspection and legal events.EPOLinked open EP data recordThe bibliographic record this page is built from.EPO

Cross-check elsewhere

Google PatentsFull text, worldwide family, citing patents and legal events.patents.google.comEspacenetNational family members and their legal status.European Patent Office

Everything on this page comes from the EPO record linked above. EPO data used under CC BY 4.0.