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Expired European patentEurope

Method for high-speed charging of secondary batteries and apparatus therefor

EP 0671069 B1 · Applicant: ZIP CHARGE CO., LTD.

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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 April 20, 1994 and granted November 5, 1997. A European patent lasts at most 20 years from filing, so its term ended April 20, 2014.
  • 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 October 20, 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.
FiledApril 20, 1994
PublishedSeptember 13, 1995
GrantedNovember 5, 1997
Term endedApril 20, 2014
Application numberEP 94913785
Classification (CPC)H02J7/485 +2 more

Timeline

Timeline From EPO dates

1995199719992001200320052007200920112013Application filedApril 20, 1994PublishedSep 13, 1995Patent grantedNov 5, 1997Term endedApril 20, 2014

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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