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Expired European patentEurope

Optical fibre interferometer and optical fibre piezo-electric modulator

EP 0831312 B1 · Applicant: Institute of Applied Physics of Russian Academy of Science ( IAP RAS)

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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 27, 1996 and granted October 17, 2001. A European patent lasts at most 20 years from filing, so its term ended February 27, 2016.
  • 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 27, 2021.
  • 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 27, 1996
PublishedMarch 25, 1998
GrantedOctober 17, 2001
Term endedFebruary 27, 2016
Application numberEP 96906116
Classification (CPC)G02F1/0134 +2 more

Timeline

Timeline From EPO dates

1997199920012003200520072009201120132015Application filedFeb 27, 1996PublishedMarch 25, 1998Patent grantedOct 17, 2001Term endedFeb 27, 2016

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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