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Method for the preparation of high-efficient, tuneable and switchable optical elements based on polymer-liquid crystal composites

EP 1774400 A1 · Applicant: Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V.

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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 June 28, 2005 and never granted as a European patent. Had it been granted, its 20-year term would have ended June 28, 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.
FiledJune 28, 2005
PublishedApril 18, 2007
GrantedNever granted
Term endedJune 28, 2025
Application numberEP 05753538
Classification (CPC)G02F1/13342

Timeline

Timeline From EPO dates

2006200820102012201420162018202020222024Application filedJune 28, 2005PublishedApril 18, 2007Term endedJune 28, 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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