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Expired European patentEurope

Method for the stabilization of solutions of ethylmagnesium-carbonate in ethanol

EP 0560087 B1 · Applicant: HOECHST AKTIENGESELLSCHAFT

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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 February 17, 1993 and granted September 4, 1996. A European patent lasts at most 20 years from filing, so its term ended February 17, 2013.
  • 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 August 17, 2018.
  • 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.
FiledFebruary 17, 1993
PublishedSeptember 15, 1993
GrantedSeptember 4, 1996
Term endedFebruary 17, 2013
Application numberEP 93102426
Classification (CPC)C07C29/68 +2 more

Timeline

Timeline From EPO dates

1994199619982000200220042006200820102012Application filedFeb 17, 1993PublishedSep 15, 1993Patent grantedSep 4, 1996Term endedFeb 17, 2013

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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