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Expired European patentEurope

Safety valve element for battery and battery case cap with safety valve

EP 0887872 B1 · Applicant: TOYO KOHAN 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 February 14, 1997 and granted October 26, 2005. A European patent lasts at most 20 years from filing, so its term ended February 14, 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 August 14, 2022.
  • 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 14, 1997
PublishedDecember 30, 1998
GrantedOctober 26, 2005
Term endedFebruary 14, 2017
Application numberEP 97902679
Classification (CPC)H01M50/3425

Timeline

Timeline From EPO dates

1998200020022004200620082010201220142016Application filedFeb 14, 1997PublishedDec 30, 1998Patent grantedOct 26, 2005Term endedFeb 14, 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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