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Expired European patentEurope

Method and apparatus for ion discrimination in an electron capture detector

EP 0831325 B1 · Applicant: Hewlett-Packard Company

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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 17, 1997 and granted June 4, 2008. A European patent lasts at most 20 years from filing, so its term ended July 17, 2017.
  • 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 17, 2023.
  • 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 17, 1997
PublishedMarch 25, 1998
GrantedJune 4, 2008
Term endedJuly 17, 2017
Application numberEP 97112297
Classification (CPC)G01N30/70

Timeline

Timeline From EPO dates

1998200020022004200620082010201220142016Application filedJuly 17, 1997PublishedMarch 25, 1998Patent grantedJune 4, 2008Term endedJuly 17, 2017

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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