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Expired European patentEurope

Process and arrangement for measuring the variation of a signal at a measuring point of a specimen

EP 0395679 B1 · Applicant: Brust, Hans-Detlef

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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 November 12, 1988 and granted March 2, 1994. A European patent lasts at most 20 years from filing, so its term ended November 12, 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 May 12, 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.
FiledNovember 12, 1988
PublishedNovember 7, 1990
GrantedMarch 2, 1994
Term endedNovember 12, 2008
Application numberEP 88909739
Classification (CPC)G01R31/305

Timeline

Timeline From EPO dates

1989199119931995199719992001200320052007Application filedNov 12, 1988PublishedNov 7, 1990Patent grantedMarch 2, 1994Term endedNov 12, 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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