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Expired European patentEurope

System and method for improving sample concentration in capillary electrophoresis

EP 0560974 B1 · Applicant: VARIAN ASSOCIATES, 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 September 30, 1992 and granted January 29, 1997. A European patent lasts at most 20 years from filing, so its term ended September 30, 2012.
  • 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 March 30, 2018.
  • 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 30, 1992
PublishedSeptember 22, 1993
GrantedJanuary 29, 1997
Term endedSeptember 30, 2012
Application numberEP 92921871
Classification (CPC)G01N27/44773

Timeline

Timeline From EPO dates

1993199519971999200120032005200720092011Application filedSep 30, 1992PublishedSep 22, 1993Patent grantedJan 29, 1997Term endedSep 30, 2012

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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