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Expired European patentEurope

Semiconductor memory device with built-in self test and built-in self repair

EP 1061448 B1 · Applicant: MITSUBISHI DENKI KABUSHIKI KAISHA

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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 4, 2000 and granted January 29, 2003. A European patent lasts at most 20 years from filing, so its term ended May 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 November 4, 2025.
  • 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 4, 2000
PublishedDecember 20, 2000
GrantedJanuary 29, 2003
Term endedMay 4, 2020
Application numberEP 00109526
Classification (CPC)G11C29/72

Timeline

Timeline From EPO dates

2001200320052007200920112013201520172019Application filedMay 4, 2000PublishedDec 20, 2000Patent grantedJan 29, 2003Term endedMay 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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