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Expired European patentEurope

Fluorinated oligophenyls and their use in liquid crystal materials

EP 0329752 B1 · Applicant: MERCK PATENT GmbH

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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 August 13, 1988 and granted March 17, 1993. A European patent lasts at most 20 years from filing, so its term ended August 13, 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 February 13, 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.
FiledAugust 13, 1988
PublishedAugust 30, 1989
GrantedMarch 17, 1993
Term endedAugust 13, 2008
Application numberEP 88907662
Classification (CPC)C09K19/12 +1 more

Timeline

Timeline From EPO dates

1989199119931995199719992001200320052007Application filedAug 13, 1988PublishedAug 30, 1989Patent grantedMarch 17, 1993Term endedAug 13, 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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