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Expired European patentEurope

Electrolysis cell with a bipolar electrode

EP 1031645 B1 · Applicant: CSEM Centre Suisse d'Electronique et de Microtechnique SA

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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 February 22, 2000 and granted January 25, 2006. A European patent lasts at most 20 years from filing, so its term ended February 22, 2020.
  • 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 August 22, 2025.
  • 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.
FiledFebruary 22, 2000
PublishedAugust 30, 2000
GrantedJanuary 25, 2006
Term endedFebruary 22, 2020
Application numberEP 00810147
Classification (CPC)C25B11/051 +2 more

Timeline

Timeline From EPO dates

2001200320052007200920112013201520172019Application filedFeb 22, 2000PublishedAug 30, 2000Patent grantedJan 25, 2006Term endedFeb 22, 2020

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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