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European application, no grantEurope

Fast circuit for calculating the discrete Fourier transformation of a signal particularly intended for a Foucault current control apparatus

EP 0087357 A2 · Applicant: INTERCONTROLE Société Anonyme

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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 February 14, 1983 and never granted as a European patent. Had it been granted, its 20-year term would have ended February 14, 2003.
  • 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 August 14, 2008.
  • 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.
FiledFebruary 14, 1983
PublishedAugust 31, 1983
GrantedNever granted
Term endedFebruary 14, 2003
Application numberEP 83400308
Classification (CPC)G06F17/141 +1 more

Timeline

Timeline From EPO dates

1984198619881990199219941996199820002002Application filedFeb 14, 1983PublishedAug 31, 1983Term endedFeb 14, 2003

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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