KDD SUBMARINE CABLE SYSTEMS INC.
Patent Owner
Stats
- 4 US PATENTS IN FORCE
- 0 US APPLICATIONS PENDING
- Feb 13, 2007 most recent publication
Details
- 4 Issued Patents
- 0 Issued in last 3 years
- 0 Published in last 3 years
- 316 Total Citation Count
- Dec 18, 1996 Earliest Filing
- 32 Expired/Abandoned/Withdrawn Patents
Patent Activity in the Last 10 Years
Technologies
Intl Class
Technology
Matters
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Top Patents (by citation)
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Recent Publications
- No Recent Publications to Display
Recent Patents
Patent #
Title
Filing Date
Issue Date
Intl Class
6804469 Supervisory system of optical amplifier repeater system and supervisory method of optical amplifier repeater systemJun 27, 01Oct 12, 04[H04B]
Expired/Abandoned/Withdrawn Patents
Patent #
Title
Status
Filing Date
Issue/Pub Date
Intl Class
7177540 Method for upgrading an optical transmission system and an optical transmitterExpiredJul 29, 04Feb 13, 07[H04B]
2005/0226,622 Underwater repeater employing rare earth element doped fiber amplifier, Raman assist and optical pump source sparingAbandonedApr 06, 04Oct 13, 05[H04J]
6870859 Multiplexing system and multiplexing method of tributary signalsExpiredMar 03, 00Mar 22, 05[H04Q]
6782201 Four fiber ring network optical switching circuit using branched inputsExpiredDec 07, 00Aug 24, 04[H04B, H04J]
6775478 Optical TDM multiplexer, optical TDM demultiplexer, WDM/TDM converter and TDM/WDM converterExpiredMar 23, 01Aug 10, 04[H04B, H04J]
6768872 Optical transmission system, optical transmission line and optical transmitterExpiredSep 25, 00Jul 27, 04[H04J]
6744989 Optical transmission system, its method, and optical amplification transmission lineExpiredMay 02, 01Jun 01, 04[H04B]
6744990 WDM optical transmission system and an optical transmission line thereofExpiredNov 05, 99Jun 01, 04[H04B]
6741810 Signal demultiplexing device and signal routing device in high speed transmission systemExpiredFeb 15, 01May 25, 04[H04J]
6594428 Dispersion compensating optical transmission line and systemExpiredMar 08, 00Jul 15, 03[G02B]
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