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Expired European patentEurope

Solid polymer fuel cell systems incorporating water removal at the anode

EP 0671057 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 October 28, 1993 and granted June 14, 2000. A European patent lasts at most 20 years from filing, so its term ended October 28, 2013.
  • 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 April 28, 2019.
  • 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 28, 1993
PublishedSeptember 13, 1995
GrantedJune 14, 2000
Term endedOctober 28, 2013
Application numberEP 94900413
Classification (CPC)H01M8/1007 +2 more

Timeline

Timeline From EPO dates

1994199619982000200220042006200820102012Application filedOct 28, 1993PublishedSep 13, 1995Patent grantedJune 14, 2000Term endedOct 28, 2013

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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