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Expired European patentEurope

Apparatus and method for real-time spectral alignment for open-path fourier transform infrared spectrometers

EP 0871845 B1 · Applicant: AIL SYSTEMS, INC.

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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 3, 1997 and granted September 25, 2002. A European patent lasts at most 20 years from filing, so its term ended November 3, 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 May 3, 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.
FiledNovember 3, 1997
PublishedOctober 21, 1998
GrantedSeptember 25, 2002
Term endedNovember 3, 2017
Application numberEP 97946541
Classification (CPC)G01J3/453

Timeline

Timeline From EPO dates

1998200020022004200620082010201220142016Application filedNov 3, 1997PublishedOct 21, 1998Patent grantedSep 25, 2002Term endedNov 3, 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

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