Patent Yard Sign in
Expired European patentEurope

Capacity expansion method for optical transmission link network without service interruption

EP 1734673 B1 · Applicant: ZTE Corporation

EPO PDF

Overview

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

Read the whole patent

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.

Google PatentsEPO PDF

Why it's free to use

  • Filed June 18, 2004 and granted December 19, 2018. A European patent lasts at most 20 years from filing, so its term ended June 18, 2024.
  • Supplementary protection certificates extend only medicine and crop-protection patents, and it isn't classified as either.
  • 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.
FiledJune 18, 2004
PublishedDecember 20, 2006
GrantedDecember 19, 2018
Term endedJune 18, 2024
Application numberEP 04738253
Classification (CPC)H04J14/029

Timeline

Timeline From EPO dates

2005200720092011201320152017201920212023Application filedJune 18, 2004PublishedDec 20, 2006Patent grantedDec 19, 2018Term endedJune 18, 2024

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.