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Expired European patentEurope

Time-domain intensity normalization for fiber optic sensing

EP 0192490 B1 · Applicant: Eldec Corporation

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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 21, 1986 and granted June 12, 1991. A European patent lasts at most 20 years from filing, so its term ended February 21, 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 August 21, 2011.
  • 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 21, 1986
PublishedAugust 27, 1986
GrantedJune 12, 1991
Term endedFebruary 21, 2006
Application numberEP 86301256
Classification (CPC)G01D5/35303

Timeline

Timeline From EPO dates

1987198919911993199519971999200120032005Application filedFeb 21, 1986PublishedAug 27, 1986Patent grantedJune 12, 1991Term endedFeb 21, 2006

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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