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Expired European patentEurope

Electrostatic information-recording media and process for recording and reproducing electrostatic information

EP 0818712 B1 · Applicant: DAI NIPPON PRINTING CO., LTD.

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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 November 16, 1990 and granted August 1, 2007. A European patent lasts at most 20 years from filing, so its term ended November 16, 2010.
  • 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 May 16, 2016.
  • 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.
FiledNovember 16, 1990
PublishedJanuary 14, 1998
GrantedAugust 1, 2007
Term endedNovember 16, 2010
Application numberEP 97116775
Classification (CPC)G03G5/02 +2 more

Timeline

Timeline From EPO dates

1991199319951997199920012003200520072009Application filedNov 16, 1990PublishedJan 14, 1998Patent grantedAug 1, 2007Term endedNov 16, 2010

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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