Inventor · disambiguated record
Yumiko Kawasaki
Also filed as: KAWASAKI YUMIKO
22 granted patents·657 citations·filing 1995–2006
96Inventor score
Files withFUJITSU LTD22
Top patents by PatentIndex Score
22 records- 0191US5764404AWavelength-division-multiplexing optical amplifierFUJITSU LTD·Filed 1995·Granted Jun 9, 1998·99 cites·9 claims
- 0290US5877881AOptical transmission systemFUJITSU LTD·Filed 1996·Granted Mar 2, 1999·126 cites·62 claims
- 0387US6038063AOptical amplifier and optical transmission system including the optical amplifierFUJITSU LTD·Filed 1998·Granted Mar 14, 2000·70 cites·49 claims
- 0479US6738584B1Method for optical fiber communication, and terminal device and system for use in carrying out the methodFUJITSU LTD·Filed 1999·Granted May 18, 2004·59 cites·17 claims
- 0579US6288836B1Optical amplifier and optical communication system having the optical amplifierFUJITSU LTD·Filed 1998·Granted Sep 11, 2001·47 cites·18 claims
- 0679US5680246AOptical amplifier and optical transmission apparatusFUJITSU LTD·Filed 1995·Granted Oct 21, 1997·64 cites·18 claims
- 0778US6823141B2Optical transmission system and dispersion compensatorFUJITSU LTD·Filed 2000·Granted Nov 23, 2004·16 cites·22 claims
- 0877US7263296B2Optical transmission system using in-line amplifiersFUJITSU LTD·Filed 2006·Granted Aug 28, 2007·3 cites·8 claims
- 0975US6496288B2Wavelength multiplexing transmission apparatus and wavelength demultiplexing reception apparatusFUJITSU LTD·Filed 2001·Granted Dec 17, 2002·10 cites·4 claims
- 1071US7376361B2Optical transmission system and dispersion compensatorFUJITSU LTD·Filed 2006·Granted May 20, 2008·3 cites·6 claims
- 1169US7116913B2Optical transmission system and dispersion compensatorFUJITSU LTD·Filed 2004·Granted Oct 3, 2006·8 cites·3 claims
- 1265US7079771B2Wavelength multiplexing transmission apparatus and wavelength demultiplexing reception apparatusFUJITSU LTD·Filed 2002·Granted Jul 18, 2006·5 cites·3 claims
- 1364US7006769B1Method for optical fiber communication, and device and system for use in carrying out the methodFUJITSU LTD·Filed 1999·Granted Feb 28, 2006·32 cites·15 claims
- 1464US6570691B1Optical transmission system using in-line amplifiersFUJITSU LTD·Filed 1997·Granted May 27, 2003·23 cites·20 claims
- 1564US6449074B1Optical transmission device and optical communication systemFUJITSU LTD·Filed 1998·Granted Sep 10, 2002·25 cites·22 claims
- 1659US5625481AAuxiliary-signal transmission systemFUJITSU LTD·Filed 1995·Granted Apr 29, 1997·21 cites·11 claims
- 1749US6295147B1Wavelength multiplexing transmission apparatus and wavelength demultiplexing reception apparatusFUJITSU LTD·Filed 1998·Granted Sep 25, 2001·17 cites·1 claims
- 1842US7116918B2Optical transmission system using in-line amplifiersFUJITSU LTD·Filed 2003·Granted Oct 3, 2006·0 cites·6 claims
- 1940US5841558AAuxiliary-signal transmission systemFUJITSU LTD·Filed 1997·Granted Nov 24, 1998·7 cites·15 claims
- 2039US6061173AWavelength-division-multiplexing optical amplifierFUJITSU LTD·Filed 1998·Granted May 9, 2000·8 cites·3 claims
- 2138US7068876B1Method and system for optical transmission adopting dispersion compensationFUJITSU LTD·Filed 1999·Granted Jun 27, 2006·8 cites·5 claims
- 2238US5798857AAuxiliary-signal transmission systemFUJITSU LTD·Filed 1997·Granted Aug 25, 1998·6 cites·8 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →