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Expired European patentEurope

Gas sensor comprising cylindrical protector cap

EP 1494023 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 June 29, 2004 and granted April 25, 2018. A European patent lasts at most 20 years from filing, so its term ended June 29, 2024.
  • Supplementary protection certificates extend only medicine and crop-protection patents, and it isn't classified as either.
  • 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.
FiledJune 29, 2004
PublishedJanuary 5, 2005
GrantedApril 25, 2018
Term endedJune 29, 2024
Application numberEP 04253895
Classification (CPC)G01N27/4077

Timeline

Timeline From EPO dates

2005200720092011201320152017201920212023Application filedJune 29, 2004PublishedJan 5, 2005Patent grantedApril 25, 2018Term endedJune 29, 2024

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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