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Lithium ion secondary battery and its manufacture

EP 0967678 A1 · Applicant: MITSUBISHI DENKI KABUSHIKI KAISHA

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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 December 22, 1997 and never granted as a European patent. Had it been granted, its 20-year term would have ended December 22, 2017.
  • 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 June 22, 2023.
  • 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.
FiledDecember 22, 1997
PublishedDecember 29, 1999
GrantedNever granted
Term endedDecember 22, 2017
Application numberEP 97949204
Classification (CPC)H01M10/058 +2 more

Timeline

Timeline From EPO dates

1998200020022004200620082010201220142016Application filedDec 22, 1997PublishedDec 29, 1999Term endedDec 22, 2017

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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