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Expired European patentEurope

Polymer electrolyte membrane for solid polymer fuel cell, membrane-electrode assembly and fuel cell

EP 1840993 B1 · Applicant: KURARAY 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 December 27, 2005 and granted February 22, 2012. A European patent lasts at most 20 years from filing, so its term ended December 27, 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.
FiledDecember 27, 2005
PublishedOctober 3, 2007
GrantedFebruary 22, 2012
Term endedDecember 27, 2025
Application numberEP 05822644
Classification (CPC)H01M8/0289 +2 more

Timeline

Timeline From EPO dates

2006200820102012201420162018202020222024Application filedDec 27, 2005PublishedOct 3, 2007Patent grantedFeb 22, 2012Term endedDec 27, 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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