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Expired European patentEurope

Polymeric reference electrode membrane and reference electrode with the membrane

EP 1193495 B1 · Applicant: Cha, Geun Sig

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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 September 28, 2001 and granted April 25, 2012. A European patent lasts at most 20 years from filing, so its term ended September 28, 2021.
  • 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.
FiledSeptember 28, 2001
PublishedApril 3, 2002
GrantedApril 25, 2012
Term endedSeptember 28, 2021
Application numberEP 01308296
Classification (CPC)G01N27/301

Timeline

Timeline From EPO dates

2002200420062008201020122014201620182020Application filedSep 28, 2001PublishedApril 3, 2002Patent grantedApril 25, 2012Term endedSep 28, 2021

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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