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Expired European patentEurope

Coulomb-blockade element and method of manufacturing the same

EP 1028472 B1 · Applicant: NIPPON TELEGRAPH AND TELEPHONE 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 October 24, 1995 and granted July 23, 2003. A European patent lasts at most 20 years from filing, so its term ended October 24, 2015.
  • 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 April 24, 2021.
  • 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.
FiledOctober 24, 1995
PublishedAugust 16, 2000
GrantedJuly 23, 2003
Term endedOctober 24, 2015
Application numberEP 00250045
Classification (CPC)H10D30/402 +2 more

Timeline

Timeline From EPO dates

1996199820002002200420062008201020122014Application filedOct 24, 1995PublishedAug 16, 2000Patent grantedJuly 23, 2003Term endedOct 24, 2015

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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