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Expired European patentEurope

Oxygen detector sheet and oxygen detecting agent using the same, and method for manufacturing oxygen detector sheet

EP 1775583 B1 · Applicant: Powdertech 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 26, 2005 and granted September 21, 2011. A European patent lasts at most 20 years from filing, so its term ended July 26, 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.
FiledJuly 26, 2005
PublishedApril 18, 2007
GrantedSeptember 21, 2011
Term endedJuly 26, 2025
Application numberEP 05767378
Classification (CPC)G01N31/225

Timeline

Timeline From EPO dates

2006200820102012201420162018202020222024Application filedJuly 26, 2005PublishedApril 18, 2007Patent grantedSep 21, 2011Term endedJuly 26, 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

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