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Expired European patentEurope

A method for producing a ceramic heater, a ceramic heater and a glow plug

EP 1610589 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 27, 2005 and granted July 22, 2015. A European patent lasts at most 20 years from filing, so its term ended June 27, 2025.
  • 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 27, 2005
PublishedDecember 28, 2005
GrantedJuly 22, 2015
Term endedJune 27, 2025
Application numberEP 05253990
Classification (CPC)F23Q7/001

Timeline

Timeline From EPO dates

2006200820102012201420162018202020222024Application filedJune 27, 2005PublishedDec 28, 2005Patent grantedJuly 22, 2015Term endedJune 27, 2025

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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