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Expired European patentEurope

Preparation of tertiary and secondary alcohols by the action of an organomanganic compound on a compound bearing a carboxyl group

EP 0325072 B1 · Applicant: SOCIETE NATIONALE ELF AQUITAINE

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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 December 23, 1988 and granted October 9, 1991. A European patent lasts at most 20 years from filing, so its term ended December 23, 2008.
  • 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 June 23, 2014.
  • 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.
FiledDecember 23, 1988
PublishedJuly 26, 1989
GrantedOctober 9, 1991
Term endedDecember 23, 2008
Application numberEP 88403299
Classification (CPC)C07C29/40

Timeline

Timeline From EPO dates

1989199119931995199719992001200320052007Application filedDec 23, 1988PublishedJuly 26, 1989Patent grantedOct 9, 1991Term endedDec 23, 2008

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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