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Expired European patentEurope

Method and apparatus for the electrolyte circulation in electric accumulators by means of force pumps

EP 0103069 B1 · Applicant: VARTA Batterie Aktiengesellschaft

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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 May 28, 1983 and granted July 29, 1987. A European patent lasts at most 20 years from filing, so its term ended May 28, 2003.
  • 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 November 28, 2008.
  • 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.
FiledMay 28, 1983
PublishedMarch 21, 1984
GrantedJuly 29, 1987
Term endedMay 28, 2003
Application numberEP 83105299
Classification (CPC)H01M50/70 +1 more

Timeline

Timeline From EPO dates

1984198619881990199219941996199820002002Application filedMay 28, 1983PublishedMarch 21, 1984Patent grantedJuly 29, 1987Term endedMay 28, 2003

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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