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Expired European patentEurope

Polyaniline composition being electro- and ion-conductive, and method of manufacture

EP 1843417 B1 · Applicant: NITTO DENKO CORPORATION

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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 4, 2000 and granted April 14, 2010. A European patent lasts at most 20 years from filing, so its term ended December 4, 2020.
  • 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 4, 2026.
  • 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 4, 2000
PublishedOctober 10, 2007
GrantedApril 14, 2010
Term endedDecember 4, 2020
Application numberEP 07013784
Classification (CPC)H01M4/90 +2 more

Timeline

Timeline From EPO dates

2001200320052007200920112013201520172019Application filedDec 4, 2000PublishedOct 10, 2007Patent grantedApril 14, 2010Term endedDec 4, 2020

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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