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Expired European patentEurope

Anthracyclinone derivatives and process for their production

EP 0086430 B1 · Applicant: ZAIDAN HOJIN BISEIBUTSU KAGAKU KENKYU KAI

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Overview

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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 September 17, 1981 and granted November 6, 1985. A European patent lasts at most 20 years from filing, so its term ended September 17, 2001.
  • 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 March 17, 2007.
  • 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.
FiledSeptember 17, 1981
PublishedAugust 24, 1983
GrantedNovember 6, 1985
Term endedSeptember 17, 2001
Application numberEP 83101145
Classification (CPC)C07C45/26 +2 more

Timeline

Timeline From EPO dates

1982198419861988199019921994199619982000Application filedSep 17, 1981PublishedAug 24, 1983Patent grantedNov 6, 1985Term endedSep 17, 2001

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

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