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Expired European patentEurope

High-porosity heat-compacted nickel powder electrode for alkaline water electrolysers

EP 0059902 B1 · Applicant: Schnapka, Herbert, Dr.

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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 February 27, 1982 and granted July 17, 1985. A European patent lasts at most 20 years from filing, so its term ended February 27, 2002.
  • 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 27, 2007.
  • 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 27, 1982
PublishedSeptember 15, 1982
GrantedJuly 17, 1985
Term endedFebruary 27, 2002
Application numberEP 82101509
Classification (CPC)C25B11/075

Timeline

Timeline From EPO dates

1983198519871989199119931995199719992001Application filedFeb 27, 1982PublishedSep 15, 1982Patent grantedJuly 17, 1985Term endedFeb 27, 2002

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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