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European application, no grantEurope

Graphite intercalation compounds with improved performance, and electrochemical application of these compounds

EP 0241650 A1 · Applicant: LE CARBONE LORRAINE

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Overview

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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 May 16, 1984 and never granted as a European patent. Had it been granted, its 20-year term would have ended May 16, 2004.
  • 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 November 16, 2009.
  • 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.
FiledMay 16, 1984
PublishedOctober 21, 1987
GrantedNever granted
Term endedMay 16, 2004
Application numberEP 87101346
Classification (CPC)H01M6/16 +2 more

Timeline

Timeline From EPO dates

1985198719891991199319951997199920012003Application filedMay 16, 1984PublishedOct 21, 1987Term endedMay 16, 2004

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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