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European application, no grantEurope

Irreversible circuit element

EP 0959520 A1 · Applicant: TDK Corporation

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Overview

The published document from the EPO: abstract, claims, description and drawings. Open it full size

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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.

Google PatentsEPO PDF

Why it's free to use

  • Filed November 13, 1998 and never granted as a European patent. Had it been granted, its 20-year term would have ended November 13, 2018.
  • 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 13, 2024.
  • 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 13, 1998
PublishedNovember 24, 1999
GrantedNever granted
Term endedNovember 13, 2018
Application numberEP 98953033
Classification (CPC)H01P1/387

Timeline

Timeline From EPO dates

1999200120032005200720092011201320152017Application filedNov 13, 1998PublishedNov 24, 1999Term endedNov 13, 2018

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.