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Expired European patentEurope

Optical amplifying-repeating transmission system with wavelength dispersion compensation

EP 0701340 B1 · Applicant: KOKUSAI DENSHIN DENWA KABUSHIKI KAISHA

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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 September 12, 1995 and granted August 14, 2002. A European patent lasts at most 20 years from filing, so its term ended September 12, 2015.
  • 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 March 12, 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.
FiledSeptember 12, 1995
PublishedMarch 13, 1996
GrantedAugust 14, 2002
Term endedSeptember 12, 2015
Application numberEP 95306356
Classification (CPC)H04B10/25253

Timeline

Timeline From EPO dates

1996199820002002200420062008201020122014Application filedSep 12, 1995PublishedMarch 13, 1996Patent grantedAug 14, 2002Term endedSep 12, 2015

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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