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Expired European patentEurope

Ink jet print head identification circuit and method

EP 1500508 B1 · Applicant: International United Technology 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 July 15, 2003 and granted September 28, 2005. A European patent lasts at most 20 years from filing, so its term ended July 15, 2023.
  • 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.
FiledJuly 15, 2003
PublishedJanuary 26, 2005
GrantedSeptember 28, 2005
Term endedJuly 15, 2023
Application numberEP 03016075
Classification (CPC)B41J2/175 +2 more

Timeline

Timeline From EPO dates

2004200620082010201220142016201820202022Application filedJuly 15, 2003PublishedJan 26, 2005Patent grantedSep 28, 2005Term endedJuly 15, 2023

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

Everything on this page comes from the EPO record linked above. EPO data used under CC BY 4.0.