Inventor · disambiguated record
Goji Nakagawa
Also filed as: NAKAGAWA GOJI
56 granted patents·11 pending applications·788 citations·filing 1996–2024
98Inventor score
Top patents by PatentIndex Score
67 records- 0198US10948802B2Wavelength converter apparatus and method of performing wavelength conversionFUJITSU LTD·Filed 2020·Granted Mar 16, 2021·10 cites·9 claims
- 0295US11968033B2Optical transmission device, optical transmission system, and optical transmitting power control methodFUJITSU LTD·Filed 2022·Granted Apr 23, 2024·4 cites·9 claims
- 0395US5960141AOptical transmission terminal deviceFUJITSU LTD·Filed 1998·Granted Sep 28, 1999·228 cites·22 claims
- 0490US7702197B2SOA array optical moduleFUJITSU LTD·Filed 2008·Granted Apr 20, 2010·13 cites·7 claims
- 0590US5883988AOptical module including a photoreception deviceFUJITSU LTD·Filed 1997·Granted Mar 16, 1999·110 cites·30 claims
- 0690US5748822AOptical module for connecting optical element and optical fiberFUJITSU LTD·Filed 1996·Granted May 5, 1998·95 cites·47 claims
- 0787US11163119B2Wavelength conversion device and method of performing wavelength conversionFUJITSU LTD·Filed 2020·Granted Nov 2, 2021·2 cites·12 claims
- 0887US9350479B2Apparatus and method for monitoring wavelength tunable optical filterFUJITSU LTD·Filed 2013·Granted May 24, 2016·7 cites·7 claims
- 0986US7460744B2Ring type optical transmission system and optical apparatus connected to sameFUJITSU LTD·Filed 2005·Granted Dec 2, 2008·11 cites·14 claims
- 1084US8654440B2Optical amplification module and optical switch deviceNAKAGAWA GOJI·Filed 2011·Granted Feb 18, 2014·7 cites·4 claims
- 1183US5647042AOptical link module connection systemFUJITSU LTD·Filed 1996·Granted Jul 8, 1997·64 cites·17 claims
- 1280US7657181B2Optical add/drop multiplexer and optical network systemFUJITSU LTD·Filed 2007·Granted Feb 2, 2010·9 cites·8 claims
- 1379US10187172B2Optical transport apparatus and optical-wavelength defragmenting methodFUJITSU LTD·Filed 2017·Granted Jan 22, 2019·3 cites·6 claims
- 1479US6599029B2Ferrule assembly and receptacle type optical transmission moduleFUJITSU LTD·Filed 2001·Granted Jul 29, 2003·24 cites·3 claims
- 1579US5966488AOptical module for connecting optical element and optical fiberFUJITSU LTD·Filed 1998·Granted Oct 12, 1999·47 cites·21 claims
- 1678US9143242B2Optical signal demodulator, optical signal demodulating method, and optical add-drop multiplexerFUJITSU LTD·Filed 2013·Granted Sep 22, 2015·4 cites·15 claims
- 1778US7548669B2Optical gate array deviceFUJITSU LTD·Filed 2007·Granted Jun 16, 2009·5 cites·16 claims
- 1877US6394663B2Ferrule assembly and optical moduleFUJITSU LTD·Filed 2001·Granted May 28, 2002·11 cites·1 claims
- 1975US6985657B2Arrayed waveguide wavelength multiplexing apparatus and optical transmitterFUJITSU LTD·Filed 2005·Granted Jan 10, 2006·7 cites·19 claims
- 2073US10797799B2Optical transmission apparatus, optical transmission system, and optical transmission methodFUJITSU LTD·Filed 2018·Granted Oct 6, 2020·2 cites·5 claims
- 2173US9705604B2Communication device and wavelength adjustment methodFUJITSU LTD·Filed 2016·Granted Jul 11, 2017·2 cites·15 claims
- 2273US7406262B2Optical transmission deviceFUJITSU LTD·Filed 2005·Granted Jul 29, 2008·5 cites·34 claims
- 2372US8437589B2Optical moduleNAKAGAWA GOJI·Filed 2010·Granted May 7, 2013·3 cites·12 claims
- 2471US9496953B2Device and method for monitoring optical signal quality, and optical transmission deviceFUJITSU LTD·Filed 2014·Granted Nov 15, 2016·2 cites·19 claims
- 2571US9444573B2Transmission device and optical transmission systemFUJITSU LTD·Filed 2015·Granted Sep 13, 2016·2 cites·6 claims
- 2669US6669378B2Ferrule assembly and optical moduleFUJITSU LTD·Filed 2002·Granted Dec 30, 2003·7 cites·1 claims
- 2767US7826744B2Optical network system and transmission apparatusFUJITSU LTD·Filed 2005·Granted Nov 2, 2010·3 cites·18 claims
- 2867US6847772B2Planar optical waveguide deviceFUJITSU LTD·Filed 2002·Granted Jan 25, 2005·10 cites·16 claims
- 2965US10200132B2Optical communication system, transmission station, and method of optical communicationFUJITSU LTD·Filed 2017·Granted Feb 5, 2019·1 cites·15 claims
- 3059US6269209B1Resin sealed optical moduleFUJITSU LTD·Filed 1998·Granted Jul 31, 2001·25 cites·8 claims
- 3159US6085000AWavelength division multiplexing optical device and manufacturing method thereforFUJITSU LTD·Filed 1998·Granted Jul 4, 2000·23 cites·5 claims
- 3257US11876559B2Optical transmission system and fiber type determination methodFUJITSU LTD·Filed 2022·Granted Jan 16, 2024·0 cites·11 claims
- 3357US10261350B2Optical transmitting apparatus and optical level control methodFUJITSU LTD·Filed 2017·Granted Apr 16, 2019·0 cites·15 claims
- 3457US6641308B2Ferrule assembly and optical moduleFUJITSU LTD·Filed 2002·Granted Nov 4, 2003·3 cites·1 claims
- 3555US6807354B2Waveguide optical deviceFUJITSU LTD·Filed 2002·Granted Oct 19, 2004·4 cites·20 claims
- 3655US6049638APhotodetector moduleFUJITSU LTD·Filed 1997·Granted Apr 11, 2000·20 cites·30 claims
- 3754US2025211356A1Optical transmission device and optical transmission systemFUJITSU LTD·Filed 2024·Application pending·0 cites
- 3852US8014642B2Optical gate array deviceFUJITSU LTD·Filed 2009·Granted Sep 6, 2011·0 cites·3 claims
- 3952US7079728B2Wavelength multiplexing processing apparatusFUJITSU LTD·Filed 2003·Granted Jul 18, 2006·3 cites·16 claims
- 4052US2024405868A1Optical transmission device, optical transmission system, and optical transmission methodFUJITSU LTD·Filed 2024·Application pending·0 cites
- 4150US2024129034A1Forward raman amplifier, bidirectional raman amplification system, and forward raman amplification systemFUJITSU LTD·Filed 2023·Application pending·0 cites
- 4249US8757898B2Optical coupling structure and array optical amplification moduleFUJITSU LTD·Filed 2013·Granted Jun 24, 2014·0 cites·8 claims
- 4348US10955727B2Wavelength converter and transmission apparatusFUJITSU LTD·Filed 2020·Granted Mar 23, 2021·0 cites·8 claims
- 4447US11387912B2Wavelength converter and fiber optic transmission systemFUJITSU LTD·Filed 2020·Granted Jul 12, 2022·0 cites·15 claims
- 4547US10763986B2Transmission device, optical termination device, transmission system, and transmission methodFUJITSU LTD·Filed 2019·Granted Sep 1, 2020·0 cites·13 claims
- 4647US10268227B2Transmission apparatus, transmission system and data detection methodFUJITSU LTD·Filed 2017·Granted Apr 23, 2019·0 cites·12 claims
- 4747US2005180752A1Signal transceiving method for use in optical ring network and optical node for the sameFUJITSU LTD·Filed 2004·Application pending·0 cites
- 4847US2009232173A1Optical semiconductor apparatusFUJITSU LTD·Filed 2008·Application pending·0 cites
- 4946US7405858B2Acousto-optic tunable filter control apparatus automatically adjusting frequency and power of radio frequency signalFUJITSU LTD·Filed 2006·Granted Jul 29, 2008·0 cites·14 claims
- 5045US10158422B2Apparatus and method for estimating optical transmission performanceFUJITSU LTD·Filed 2017·Granted Dec 18, 2018·0 cites·18 claims
Showing the top 50 of 67 patent records by PatentIndex Score.
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →