Inventor · disambiguated record
Nobuhiko Kikuchi
Also filed as: KIKUCHI NOBUHIKO
41 granted patents·1 pending application·591 citations·filing 1994–2018
98Inventor score
Top patents by PatentIndex Score
42 records- 0197US8184992B2Optical field receiver and optical transmission systemKIKUCHI NOBUHIKO·Filed 2006·Granted May 22, 2012·70 cites·20 claims
- 0297US7978390B2Optical modulatorHITACHI LTD·Filed 2007·Granted Jul 12, 2011·61 cites·13 claims
- 0396US6532320B1Equipments, transpondor and methods for optical fiber transmissionHITACHI LTD·Filed 2000·Granted Mar 11, 2003·55 cites·14 claims
- 0494US10187158B2Optical communication system and optical transmitterOCLARO JAPAN INC·Filed 2017·Granted Jan 22, 2019·12 cites·9 claims
- 0593US8417126B2Polarization multiplexing transmitter and transmission systemMANDAI KOHEI·Filed 2011·Granted Apr 9, 2013·18 cites·15 claims
- 0687US8095018B2Quaternary phase modulatorSEKINE KENRO·Filed 2008·Granted Jan 10, 2012·16 cites·10 claims
- 0787US7515832B2Optical transmission equipment and integrated circuitHITACHI COMM TECH LTD·Filed 2006·Granted Apr 7, 2009·15 cites·18 claims
- 0886US8855503B2Optical receiver and optical transmission systemKIKUCHI NOBUHIKO·Filed 2010·Granted Oct 7, 2014·9 cites·19 claims
- 0986US8805188B2Polarization-multiplexed optical transmission system, polarization-Multiplexed optical transmitter, and polarization-multiplexed optical receiverKIKUCHI NOBUHIKO·Filed 2011·Granted Aug 12, 2014·7 cites·19 claims
- 1086US8265489B2Optical field transmitter and optical field transmission systemKIKUCHI NOBUHIKO·Filed 2008·Granted Sep 11, 2012·14 cites·11 claims
- 1186US7650075B2Optical add-drop multiplexer, and optical network equipment using the sameHITACHI COMM TECH LTD·Filed 2005·Granted Jan 19, 2010·12 cites·21 claims
- 1285US6850713B2Optical single sideband transmitterHITACHI LTD·Filed 2002·Granted Feb 1, 2005·44 cites·18 claims
- 1384US8503887B2Pre-equalized optical transmitter and pre-equalized optical transmission systemKIKUCHI NOBUHIKO·Filed 2009·Granted Aug 6, 2013·11 cites·17 claims
- 1484US7653311B2Optical wavelength add-drop multiplexerHITACHI COMM TECH LTD·Filed 2004·Granted Jan 26, 2010·22 cites·8 claims
- 1582US7450288B2Optical modulation device, optical transmitter, and optical transmission equipmentHITACHI COMM TECH LTD·Filed 2006·Granted Nov 11, 2008·9 cites·15 claims
- 1682US6850663B2Equipments including transponder for optical fiber transmissionHITACHI LTD·Filed 2003·Granted Feb 1, 2005·15 cites·20 claims
- 1781US8693886B2Optical transmission systemKIKUCHI NOBUHIKO·Filed 2010·Granted Apr 8, 2014·6 cites·10 claims
- 1880US9178617B2Optical multilevel signal pre-equalization circuit, optical multilevel signal pre-equalization transmitter, and polarization-multiplexed pre-equalization transmitterHITACHI LTD·Filed 2013·Granted Nov 3, 2015·5 cites·11 claims
- 1980US6587260B2Band-expanding method for optical amplifiers and optical transmission apparatusHITACHI LTD·Filed 2001·Granted Jul 1, 2003·21 cites·21 claims
- 2079US8873968B2Optical field receiver, optical multilevel signal receiver, and optical transmission systemKIKUCHI NOBUHIKO·Filed 2006·Granted Oct 28, 2014·8 cites·20 claims
- 2177US6671464B1Polarization mode dispersion compensator and compensation methodHITACHI LTD·Filed 1999·Granted Dec 30, 2003·55 cites·5 claims
- 2276US8520196B2Optical communication module and optical fiber communication systemHIRAI RIU·Filed 2012·Granted Aug 27, 2013·6 cites·19 claims
- 2374US7616318B2Apparatus for measuring waveform of optical electric field, optical transmission apparatus connected thereto and a method for producing the optical transmission apparatusHITACHI COMM TECH LTD·Filed 2006·Granted Nov 10, 2009·7 cites·4 claims
- 2473US8655193B2Optical multi-level transmission systemKIKUCHI NOBUHIKO·Filed 2009·Granted Feb 18, 2014·5 cites·8 claims
- 2572US5606445AOptical transmission systemHITACHI LTD·Filed 1994·Granted Feb 25, 1997·35 cites·5 claims
- 2669US10250333B2Optical communication system and optical transmitterOCLARO JAPAN INC·Filed 2018·Granted Apr 2, 2019·1 cites·3 claims
- 2769US8483573B2Optical transmission and reception system, and optical receiverKOTAKE HIDEAKI·Filed 2011·Granted Jul 9, 2013·5 cites·11 claims
- 2867US9143846B2Wavelength-multiplexed optical transmission device, wavelength-multiplexed optical transmission system, wavelength-multiplexed optical transmission methodHITACHI LTD·Filed 2012·Granted Sep 22, 2015·2 cites·14 claims
- 2966US7769257B2Optical transmission system and signal speed converting apparatusHITACHI LTD·Filed 2008·Granted Aug 3, 2010·3 cites·22 claims
- 3066US6891659B2Optical amplifiers, optical fiber raman amplifiers and optical systemsHITACHI LTD·Filed 2001·Granted May 10, 2005·9 cites·20 claims
- 3164US8340533B2Optical balanced receiver and IQ receiver with balanced compensationMANDAI KOHEI·Filed 2009·Granted Dec 25, 2012·3 cites·5 claims
- 3261US9046653B2PDL compensator optical device, and PDL compensation methodHITACHI LTD·Filed 2012·Granted Jun 2, 2015·1 cites·5 claims
- 3361US7903975B2Optical add-drop multiplexerHITACHI LTD·Filed 2004·Granted Mar 8, 2011·5 cites·9 claims
- 3460US9143265B2Optical polarization multilevel signal receiving apparatus, optical polarization multilevel signal transmitting apparatus, and optical polarization multilevel signal transmission apparatusHITACHI LTD·Filed 2013·Granted Sep 22, 2015·1 cites·9 claims
- 3559US7813655B2Signal waveform deterioration compensatorHITACHI LTD·Filed 2003·Granted Oct 12, 2010·5 cites·18 claims
- 3650US8472807B2Optical field transmitter and optical transmission systemKIKUCHI NOBUHIKO·Filed 2009·Granted Jun 25, 2013·0 cites·18 claims
- 3746US9485032B2Optical multilevel transmitter and optical transponderHITACHI LTD·Filed 2014·Granted Nov 1, 2016·0 cites·8 claims
- 3845US9467245B2Polarization multiplexing optical transceiverHITACHI LTD·Filed 2014·Granted Oct 11, 2016·0 cites·13 claims
- 3944US5880876AOptical transmission systemHITACHI LTD·Filed 1996·Granted Mar 9, 1999·9 cites·18 claims
- 4043US5995278AOptical transmission systemHITACHI LTD·Filed 1998·Granted Nov 30, 1999·9 cites·15 claims
- 4138US10469170B2Optical transceiver, optical transmitter IC, and optical receiver ICOCLARO JAPAN INC·Filed 2017·Granted Nov 5, 2019·0 cites·6 claims
- 4238US2004208428A1Wavelength-multiplexed narrow-bandwidth optical transmitter and wavelength-multiplexed vestigial-side-band optical transmitterFiled 2002·Application pending·0 cites
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →