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Expired European patentEurope

Sensor element and gas sensor

EP 0959348 B1 · Applicant: NGK Spark Plug Co. Ltd.

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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 18, 1999 and granted September 18, 2013. A European patent lasts at most 20 years from filing, so its term ended May 18, 2019.
  • 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 18, 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.
FiledMay 18, 1999
PublishedNovember 24, 1999
GrantedSeptember 18, 2013
Term endedMay 18, 2019
Application numberEP 99303876
Classification (CPC)G01N27/4075 +1 more

Timeline

Timeline From EPO dates

2000200220042006200820102012201420162018Application filedMay 18, 1999PublishedNov 24, 1999Patent grantedSep 18, 2013Term endedMay 18, 2019

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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