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Expired European patentEurope

In-plane switching liquid crystal display comprising compensation film for angular field of view using +a-plate and +c-plate

EP 1676170 B1 · Applicant: LG Chem, 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 October 22, 2004 and granted August 24, 2011. A European patent lasts at most 20 years from filing, so its term ended October 22, 2024.
  • 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.
FiledOctober 22, 2004
PublishedJuly 5, 2006
GrantedAugust 24, 2011
Term endedOctober 22, 2024
Application numberEP 04793559
Classification (CPC)G02F1/133634

Timeline

Timeline From EPO dates

2005200720092011201320152017201920212023Application filedOct 22, 2004PublishedJuly 5, 2006Patent grantedAug 24, 2011Term endedOct 22, 2024

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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