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Expired European patentEurope

Threshold voltage adjusting method for a MIS device and charge detecting device

EP 0886321 B1 · Applicant: SONY CORPORATION

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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 July 13, 1995 and granted September 15, 2004. A European patent lasts at most 20 years from filing, so its term ended July 13, 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 January 13, 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.
FiledJuly 13, 1995
PublishedDecember 23, 1998
GrantedSeptember 15, 2004
Term endedJuly 13, 2015
Application numberEP 98114675
Classification (CPC)H03F1/301 +2 more

Timeline

Timeline From EPO dates

1996199820002002200420062008201020122014Application filedJuly 13, 1995PublishedDec 23, 1998Patent grantedSep 15, 2004Term endedJuly 13, 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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