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Expired European patentEurope

Anti-reflecting membranes, a method for producing the membranes and their use for optical members display apparatus, optical storage media and solar energy converting devices

EP 1659423 B1 · Applicant: Hitachi, 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 August 12, 2005 and granted January 26, 2011. A European patent lasts at most 20 years from filing, so its term ended August 12, 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.
FiledAugust 12, 2005
PublishedMay 24, 2006
GrantedJanuary 26, 2011
Term endedAugust 12, 2025
Application numberEP 05017621
Classification (CPC)C03C14/004 +2 more

Timeline

Timeline From EPO dates

2006200820102012201420162018202020222024Application filedAug 12, 2005PublishedMay 24, 2006Patent grantedJan 26, 2011Term endedAug 12, 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

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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