Assignee
NTT ELECTRONICS CORP
US88 patents
Top patents by PatentIndex Score
US6229165B1May 8, 2001
Semiconductor device
NTT ELECTRONICS CORP84 citations95
US9229179B2Jan 5, 2016
Integrated optoelectronic module
NTT ELECTRONICS CORP9 citations84
US10126502B2Nov 13, 2018
Optical waveguide device and module
NTT ELECTRONICS CORP5 citations83
US9201194B2Dec 1, 2015
Optical module
NTT ELECTRONICS CORP7 citations83
US7599587B2Oct 6, 2009
Wavelength selective switch
NTT ELECTRONICS CORP12 citations83
US7413355B2Aug 19, 2008
Light emitting module and single-fiber two-way optical communication module
NTT ELECTRONICS CORP15 citations83
US7995930B2Aug 9, 2011
Optical receiver using Mach-Zehnder interferometer
NTT ELECTRONICS CORP8 citations82
US7054403B2May 30, 2006
Phase-Locked Loop
NTT ELECTRONICS CORP13 citations82
US10868617B2Dec 15, 2020
Chromatic dispersion compensation device, chromatic dispersion compensation method, and communication device
NTT ELECTRONICS CORP2 citations73
US7364370B2Apr 29, 2008
Optical receptacle and optical module with optical receptacle
NTT ELECTRONICS CORP8 citations73
US6898345B2May 24, 2005
Optical multiplexer and method for its production
NTT ELECTRONICS CORP7 citations73
US10305675B2May 28, 2019
Data phase tracking device, data phase tracking method and communication device
NTT ELECTRONICS CORP2 citations72
US9684129B2Jun 20, 2017
Optical waveguide device and module
NTT ELECTRONICS CORP4 citations72
US10608743B2Mar 31, 2020
Transmission characteristic compensation apparatus, transmission characteristic compensation method, and communication apparatus
NTT ELECTRONICS CORP4 citations71
US6678290B2Jan 13, 2004
Optical output control circuit for obtaining stable optical output power
NTT ELECTRONICS CORP11 citations70
US6912083B2Jun 28, 2005
ASE light source, optical amplifier and laser oscillator
NTT ELECTRONICS CORP7 citations69
US10310159B2Jun 4, 2019
Optical waveguide device
NTT ELECTRONICS CORP2 citations68
US9357276B2May 31, 2016
Digital broadcast method
NTT ELECTRONICS CORP3 citations68
US7045379B2May 16, 2006
Method of manufacturing surface shape recognition sensor
NTT ELECTRONICS CORP9 citations68
US6842560B2Jan 11, 2005
Optical multiplexing circuit and optical multiplexer
NTT ELECTRONICS CORP9 citations67
US11323238B2May 3, 2022
Frame synchronization apparatus, optical communication apparatus, and frame synchronization method
NTT ELECTRONICS CORP0 citations62
US11201721B2Dec 14, 2021
Frame synchronization apparatus, optical communication apparatus, and frame synchronization method
NTT ELECTRONICS CORP0 citations62
US6731780B2May 4, 2004
Fingerprint image judgment apparatus and program
NTT ELECTRONICS CORP4 citations62
US11307356B2Apr 19, 2022
Optical module
NTT ELECTRONICS CORP1 citations61
US10880193B2Dec 29, 2020
Error correction device, error correction method, and communication device
NTT ELECTRONICS CORP1 citations61
US10422719B2Sep 24, 2019
Chromatic dispersion estimating circuit, optical reception device and chromatic dispersion amount estimating method
NTT ELECTRONICS CORP1 citations61
US9122084B2Sep 1, 2015
Phase modulation apparatus
NTT ELECTRONICS CORP3 citations61
US7808705B2Oct 5, 2010
Wavelength-selective switch
NTT ELECTRONICS CORP4 citations61
US6885823B2Apr 26, 2005
Wavelength multiplexing/demultiplexing unit, wavelength multiplexing/demultiplexing apparatus and wavelength multiplexing/demultiplexing method
NTT ELECTRONICS CORP5 citations61
US11217705B2Jan 4, 2022
Semiconductor element, semiconductor device, and method for manufacturing same
NTT ELECTRONICS CORP0 citations60
US7880197B2Feb 1, 2011
Avalanche photodiode having doping region with monotonically increasing concentration distribution
NTT ELECTRONICS CORP2 citations60
US7086789B2Aug 8, 2006
Optical element module with a primary coated optical fiber
NTT ELECTRONICS CORP3 citations60
US6909161B2Jun 21, 2005
Photodiode
NTT ELECTRONICS CORP2 citations60
US10374718B2Aug 6, 2019
Optical transmission distortion compensation device, optical transmission distortion compensation method, and communication device
NTT ELECTRONICS CORP1 citations59
US7400800B2Jul 15, 2008
Arrayed waveguide grating type optical multiplexer/demultiplexer circuit
NTT ELECTRONICS CORP2 citations59
US6888379B2May 3, 2005
Phase comparator circuit
NTT ELECTRONICS CORP3 citations59
US12386591B2Aug 12, 2025
Arithmetic circuit
NTT ELECTRONICS CORP0 citations58
US12306533B2May 20, 2025
Optical device manufacturing method and manufacturing apparatus using local etching
NTT ELECTRONICS CORP0 citations58
US11360741B2Jun 14, 2022
Arithmetic circuit
NTT ELECTRONICS CORP0 citations58
US7215799B2May 8, 2007
Content data processing system, electronic device apparatus, and server device
NTT ELECTRONICS CORP7 citations58
US12068421B2Aug 20, 2024
Light reception element and light shielding structure for optical circuit
NTT ELECTRONICS CORP0 citations57
US11558114B2Jan 17, 2023
Optical transmission characteristics compensating method and optical transmission characteristics compensating system
NTT ELECTRONICS CORP1 citations57
US10333834B2Jun 25, 2019
Automatic packet reception apparatus
NTT ELECTRONICS CORP1 citations57
US9214921B2Dec 15, 2015
Sampling rate conversion device
NTT ELECTRONICS CORP2 citations57
US7499613B2Mar 3, 2009
Y branch circuit and method for manufacturing the same
NTT ELECTRONICS CORP2 citations57
US11121778B1Sep 14, 2021
Phase variation compensation device, phase variation compensation method and communication device
NTT ELECTRONICS CORP0 citations56
US7057419B2Jun 6, 2006
Phase synchronization circuit
NTT ELECTRONICS CORP4 citations54
US9276158B2Mar 1, 2016
Photodiode
NTT ELECTRONICS CORP0 citations52
US8031984B2Oct 4, 2011
Semiconductor optical modulator
NTT ELECTRONICS CORP1 citations52
US7787736B2Aug 31, 2010
Semiconductor optoelectronic waveguide
NTT ELECTRONICS CORP0 citations52
Showing the top 50 of 88 patents by PatentIndex Score.