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Expired European patentEurope

Method and device for detecting modifications in the state of a surface and for controlling the same

EP 0316206 B1 · Applicant: LYONNAISE DES EAUX - DUMEZ

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Overview

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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 October 7, 1988 and granted September 5, 1990. A European patent lasts at most 20 years from filing, so its term ended October 7, 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 April 7, 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.
FiledOctober 7, 1988
PublishedMay 17, 1989
GrantedSeptember 5, 1990
Term endedOctober 7, 2008
Application numberEP 88402540
Classification (CPC)G01N17/008 +1 more

Timeline

Timeline From EPO dates

1989199119931995199719992001200320052007Application filedOct 7, 1988PublishedMay 17, 1989Patent grantedSep 5, 1990Term endedOct 7, 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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