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Expired European patentEurope

Magnesium derivative preparation process

EP 0708752 B1 · Applicant: LHOIST RECHERCHE ET DEVELOPPEMENT S.A.

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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 July 11, 1994 and granted April 22, 1998. A European patent lasts at most 20 years from filing, so its term ended July 11, 2014.
  • 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 January 11, 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.
FiledJuly 11, 1994
PublishedMay 1, 1996
GrantedApril 22, 1998
Term endedJuly 11, 2014
Application numberEP 94918698
Classification (CPC)C07C51/412

Timeline

Timeline From EPO dates

1995199719992001200320052007200920112013Application filedJuly 11, 1994PublishedMay 1, 1996Patent grantedApril 22, 1998Term endedJuly 11, 2014

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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