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Expired European patentEurope

Nonaqueous electrolyte for battery

EP 1716616 B1 · Applicant: Cheil Industries Inc.

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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 October 27, 2004 and granted August 31, 2011. A European patent lasts at most 20 years from filing, so its term ended October 27, 2024.
  • Supplementary protection certificates extend only medicine and crop-protection patents, and it isn't classified as either.
  • 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.
FiledOctober 27, 2004
PublishedNovember 2, 2006
GrantedAugust 31, 2011
Term endedOctober 27, 2024
Application numberEP 04793584
Classification (CPC)H01M10/052 +2 more

Timeline

Timeline From EPO dates

2005200720092011201320152017201920212023Application filedOct 27, 2004PublishedNov 2, 2006Patent grantedAug 31, 2011Term endedOct 27, 2024

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

Everything on this page comes from the EPO record linked above. EPO data used under CC BY 4.0.