Inventor
TSUZUKI KEN
JP34 patents
⚠️ This page may combine multiple inventors who share the name “TSUZUKI KEN”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
NIPPON TELEGRAPH & TELEPHONE
24 patentsUS6717187B2Apr 6, 2004
Semiconductor optical device and the fabrication method
NIPPON TELEGRAPH & TELEPHONE16 citations91
US7711214B2May 4, 2010
Semiconductor optical modulator
NIPPON TELEGRAPH & TELEPHONE11 citations84
US10890787B2Jan 12, 2021
Optical modulator
NIPPON TELEGRAPH & TELEPHONE7 citations82
US11275261B2Mar 15, 2022
Optical modulator
NIPPON TELEGRAPH & TELEPHONE3 citations73
US11340478B2May 24, 2022
Optical transmitter
NIPPON TELEGRAPH & TELEPHONE2 citations72
US10295744B2May 21, 2019
Coherent optical mixer circuit
NIPPON TELEGRAPH & TELEPHONE2 citations72
US7060518B2Jun 13, 2006
Semiconductor optical device and the fabrication method
NIPPON TELEGRAPH & TELEPHONE6 citations72
US12099266B2Sep 24, 2024
Optical circuit with common ground configuration for resistors and thermo-optic phase shifters
NIPPON TELEGRAPH & TELEPHONE2 citations71
US10317709B2Jun 11, 2019
Optical modulator
NIPPON TELEGRAPH & TELEPHONE3 citations68
US7355778B2Apr 8, 2008
Semiconductor optical modulator
NIPPON TELEGRAPH & TELEPHONE5 citations62
US11561350B2Jan 24, 2023
Optical module
NIPPON TELEGRAPH & TELEPHONE1 citations61
US10852618B2Dec 1, 2020
Optical modulator having interconnecting ground electrodes for coplanar waveguides
NIPPON TELEGRAPH & TELEPHONE1 citations61
US10193653B2Jan 29, 2019
Polarization multiplexing optical transmission circuit and polarization multiplexing optical transmission and reception circuit
NIPPON TELEGRAPH & TELEPHONE1 citations61
US6982469B2Jan 3, 2006
Semiconductor optical device and the fabrication method
NIPPON TELEGRAPH & TELEPHONE4 citations61
US10277271B2Apr 30, 2019
Optical module
NIPPON TELEGRAPH & TELEPHONE0 citations52
US12078851B2Sep 3, 2024
Optical module
NIPPON TELEGRAPH & TELEPHONE0 citations51
US11841598B2Dec 12, 2023
Optical modulator
NIPPON TELEGRAPH & TELEPHONE0 citations51
US10165690B2Dec 25, 2018
Solder joint structure of flexible printed circuit board
NIPPON TELEGRAPH & TELEPHONE1 citations51
US12332489B2Jun 17, 2025
Opto-electronic integrated module
NIPPON TELEGRAPH & TELEPHONE0 citations50
US9297961B2Mar 29, 2016
Optical module
NIPPON TELEGRAPH & TELEPHONE0 citations48
US10601522B2Mar 24, 2020
Optical receiver
NIPPON TELEGRAPH & TELEPHONE0 citations41
US10720543B2Jul 21, 2020
Photodetector
NIPPON TELEGRAPH & TELEPHONE0 citations40
US10146099B2Dec 4, 2018
Optical modulator
NIPPON TELEGRAPH & TELEPHONE0 citations40
US9297977B2Mar 29, 2016
Lens optical component with lens housing supported by lens holder
NIPPON TELEGRAPH & TELEPHONE0 citations40
NTT ELECTRONICS CORP
4 patentsUS8031984B2Oct 4, 2011
Semiconductor optical modulator
NTT ELECTRONICS CORP1 citations52
US7787736B2Aug 31, 2010
Semiconductor optoelectronic waveguide
NTT ELECTRONICS CORP0 citations52
US7599595B2Oct 6, 2009
Semiconductor optoelectronic waveguide
NTT ELECTRONICS CORP0 citations52
US10649147B2May 12, 2020
Optical module
NTT ELECTRONICS CORP0 citations40