Expired European patentEurope
Method and apparatus for analysing the corrosive effect of the soil and its environment on a buried metallic structure, and application for locating this effect
EP 0229573 B1 · Applicant: TOTAL RAFFINAGE DISTRIBUTION S.A.
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.
Why it's free to use
- Filed December 30, 1986 and granted July 21, 1993. A European patent lasts at most 20 years from filing, so its term ended December 30, 2006.
- 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 June 30, 2012.
- 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.
FiledDecember 30, 1986
PublishedJuly 22, 1987
GrantedJuly 21, 1993
Term endedDecember 30, 2006
Application numberEP 86402960
Classification (CPC)G01N17/02
Timeline
Timeline From EPO dates
Sources & verification
Official EPO records
Everything on this page comes from the EPO record linked above. EPO data used under CC BY 4.0.