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Expired European patentEurope

Method for the preparation of ginkgolide B from ginkgolide C

EP 0680968 B1 · Applicant: SOCIETE DE CONSEILS DE RECHERCHES ET D'APPLICATIONS SCIENTIFIQUES (S.C.R.A.S.)

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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 April 20, 1995 and granted February 16, 2000. A European patent lasts at most 20 years from filing, so its term ended April 20, 2015.
  • 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 October 20, 2020.
  • 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.
FiledApril 20, 1995
PublishedNovember 8, 1995
GrantedFebruary 16, 2000
Term endedApril 20, 2015
Application numberEP 95400876
Classification (CPC)C07D493/22 +1 more

Timeline

Timeline From EPO dates

1996199820002002200420062008201020122014Application filedApril 20, 1995PublishedNov 8, 1995Patent grantedFeb 16, 2000Term endedApril 20, 2015

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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