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Expired European patentEurope

Method and system for generating switching timing signal for separating transmitting and receving signal in optical repeater of mobile telecommunication network using tdd and ofdm modulation

EP 1771987 B1 · Applicant: SK Telecom. Co., Ltd.

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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 July 29, 2005 and granted January 18, 2017. A European patent lasts at most 20 years from filing, so its term ended July 29, 2025.
  • 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.
FiledJuly 29, 2005
PublishedApril 11, 2007
GrantedJanuary 18, 2017
Term endedJuly 29, 2025
Application numberEP 05773982
Classification (CPC)H04J14/02 +2 more

Timeline

Timeline From EPO dates

2006200820102012201420162018202020222024Application filedJuly 29, 2005PublishedApril 11, 2007Patent grantedJan 18, 2017Term endedJuly 29, 2025

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

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