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Expired European patentEurope

Test piece coloration comparative decision unit

EP 0343692 B1 · Applicant: BOEHRINGER MANNHEIM CORPORATION

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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 27, 1988 and granted September 28, 1994. A European patent lasts at most 20 years from filing, so its term ended July 27, 2008.
  • 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 27, 2014.
  • 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 27, 1988
PublishedNovember 29, 1989
GrantedSeptember 28, 1994
Term endedJuly 27, 2008
Application numberEP 89111626
Classification (CPC)G01N21/293

Timeline

Timeline From EPO dates

1989199119931995199719992001200320052007Application filedJuly 27, 1988PublishedNov 29, 1989Patent grantedSep 28, 1994Term endedJuly 27, 2008

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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