Expired European patentEurope
Method and device for the determination by optical emission spectrometry of an element such as aluminium present in a dissolved and precipitated state in a metal such as steel
EP 0125171 B1 · Applicant: INSTITUT DE RECHERCHES DE LA SIDERURGIE FRANCAISE (IRSID)
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 April 27, 1984 and granted September 2, 1987. A European patent lasts at most 20 years from filing, so its term ended April 27, 2004.
- 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 October 27, 2009.
- 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.
FiledApril 27, 1984
PublishedNovember 14, 1984
GrantedSeptember 2, 1987
Term endedApril 27, 2004
Application numberEP 84400863
Classification (CPC)G01N21/67
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.