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Expired European patentEurope

Bipolar plate for an apparatus made of a stack of electrochemical cells with solid electrolyte, and its manufacturing process

EP 0154772 B1 · Applicant: BBC Brown Boveri AG

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Overview

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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 January 18, 1985 and granted August 3, 1988. A European patent lasts at most 20 years from filing, so its term ended January 18, 2005.
  • 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 July 18, 2010.
  • 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.
FiledJanuary 18, 1985
PublishedSeptember 18, 1985
GrantedAugust 3, 1988
Term endedJanuary 18, 2005
Application numberEP 85100473
Classification (CPC)H01M8/0204 +2 more

Timeline

Timeline From EPO dates

1986198819901992199419961998200020022004Application filedJan 18, 1985PublishedSep 18, 1985Patent grantedAug 3, 1988Term endedJan 18, 2005

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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