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Expired European patentEurope

Chiral nematic liquid crystal composition and devices comprising the same

EP 0760964 B1 · Applicant: RAYCHEM CORPORATION

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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 September 26, 1994 and granted July 12, 2000. A European patent lasts at most 20 years from filing, so its term ended September 26, 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 March 26, 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.
FiledSeptember 26, 1994
PublishedMarch 12, 1997
GrantedJuly 12, 2000
Term endedSeptember 26, 2014
Application numberEP 94930478
Classification (CPC)C09K19/544 +2 more

Timeline

Timeline From EPO dates

1995199719992001200320052007200920112013Application filedSep 26, 1994PublishedMarch 12, 1997Patent grantedJuly 12, 2000Term endedSep 26, 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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