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Expired European patentEurope

Method for measuring nitrogen oxide

EP 1014084 B1 · Applicant: NGK INSULATORS, 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 May 14, 1997 and granted July 28, 2004. A European patent lasts at most 20 years from filing, so its term ended May 14, 2017.
  • 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 14, 2022.
  • 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 14, 1997
PublishedJune 28, 2000
GrantedJuly 28, 2004
Term endedMay 14, 2017
Application numberEP 00104586
Classification (CPC)G01N27/419 +1 more

Timeline

Timeline From EPO dates

1998200020022004200620082010201220142016Application filedMay 14, 1997PublishedJune 28, 2000Patent grantedJuly 28, 2004Term endedMay 14, 2017

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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