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European application, no grantEurope

Optical switch and optical switched network

EP 1017243 A2 · Applicant: NEC CORPORATION

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Overview

The published document from the EPO: abstract, claims, description and drawings. Open it full size

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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 December 28, 1999 and never granted as a European patent. Had it been granted, its 20-year term would have ended December 28, 2019.
  • 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 June 28, 2025.
  • 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.
FiledDecember 28, 1999
PublishedJuly 5, 2000
GrantedNever granted
Term endedDecember 28, 2019
Application numberEP 99250449
Classification (CPC)H04Q11/0001

Timeline

Timeline From EPO dates

2000200220042006200820102012201420162018Application filedDec 28, 1999PublishedJuly 5, 2000Term endedDec 28, 2019

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

Everything on this page comes from the EPO record linked above. EPO data used under CC BY 4.0.