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Expired European patentEurope

Process for the preparation of binary indole alkaloids

EP 0386972 B1 · Applicant: MITSUI PETROCHEMICAL INDUSTRIES, LTD.

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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 March 5, 1990 and granted August 4, 1993. A European patent lasts at most 20 years from filing, so its term ended March 5, 2010.
  • 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 September 5, 2015.
  • 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.
FiledMarch 5, 1990
PublishedSeptember 12, 1990
GrantedAugust 4, 1993
Term endedMarch 5, 2010
Application numberEP 90302298
Classification (CPC)C07D519/04

Timeline

Timeline From EPO dates

1991199319951997199920012003200520072009Application filedMarch 5, 1990PublishedSep 12, 1990Patent grantedAug 4, 1993Term endedMarch 5, 2010

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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