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Expired European patentEurope

Separating agent for optical isomer and separation column for optical isomers

EP 1818675 B1 · Applicant: Merck Patent GmbH

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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 November 29, 2005 and granted January 20, 2016. A European patent lasts at most 20 years from filing, so its term ended November 29, 2025.
  • Supplementary protection certificates extend only medicine and crop-protection patents, and it isn't classified as either.
  • 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.
FiledNovember 29, 2005
PublishedAugust 15, 2007
GrantedJanuary 20, 2016
Term endedNovember 29, 2025
Application numberEP 05811734
Classification (CPC)B01J20/286 +2 more

Timeline

Timeline From EPO dates

2006200820102012201420162018202020222024Application filedNov 29, 2005PublishedAug 15, 2007Patent grantedJan 20, 2016Term endedNov 29, 2025

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

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