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Expired European patentEurope

In-plane switching liquid crystal display comprising compensation film for angular field of view using negative biaxial retardation film and (+) c-plate

EP 1702233 B1 · Applicant: LG Chemical Co., Ltd.

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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 January 7, 2005 and granted July 18, 2012. A European patent lasts at most 20 years from filing, so its term ended January 7, 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.
FiledJanuary 7, 2005
PublishedSeptember 20, 2006
GrantedJuly 18, 2012
Term endedJanuary 7, 2025
Application numberEP 05704463
Classification (CPC)G02F1/133634 +1 more

Timeline

Timeline From EPO dates

2006200820102012201420162018202020222024Application filedJan 7, 2005PublishedSep 20, 2006Patent grantedJuly 18, 2012Term endedJan 7, 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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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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