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Expired European patentEurope

Dry analytical element and method for the colorimetric determination of lithium ion

EP 0579331 B1 · Applicant: Johnson & Johnson Clinical Diagnostics, Inc.

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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 13, 1993 and granted May 12, 1999. A European patent lasts at most 20 years from filing, so its term ended July 13, 2013.
  • A supplementary protection certificate, which can extend a medicine or crop-protection patent, adds at most five and a half years, so even that would have ended by January 13, 2019.
  • 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 13, 1993
PublishedJanuary 19, 1994
GrantedMay 12, 1999
Term endedJuly 13, 2013
Application numberEP 93202064
Classification (CPC)G01N33/84 +1 more

Timeline

Timeline From EPO dates

1994199619982000200220042006200820102012Application filedJuly 13, 1993PublishedJan 19, 1994Patent grantedMay 12, 1999Term endedJuly 13, 2013

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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