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Expired European patentEurope

Impregnation of microporous electrocatalyst particles for improving performance in an electrochemical fuel cell

EP 1068649 B1 · Applicant: BALLARD POWER SYSTEMS INC.

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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 March 4, 1999 and granted May 26, 2004. A European patent lasts at most 20 years from filing, so its term ended March 4, 2019.
  • A supplementary protection certificate, which can extend a medicine or crop-protection patent, adds at most five and a half years, so even that would have ended by September 4, 2024.
  • 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.
FiledMarch 4, 1999
PublishedJanuary 17, 2001
GrantedMay 26, 2004
Term endedMarch 4, 2019
Application numberEP 99938016
Classification (CPC)H01M8/1004 +2 more

Timeline

Timeline From EPO dates

2000200220042006200820102012201420162018Application filedMarch 4, 1999PublishedJan 17, 2001Patent grantedMay 26, 2004Term endedMarch 4, 2019

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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