Inventor
KIKUCHI KIYOFUMI
JP19 patents
Patents
19 patentsUS9817186B2Nov 14, 2017
Polarization rotator
NIPPON TELEGRAPH & TELEPHONE20 citations91
US11592629B2Feb 28, 2023
Optical module
NIPPON TELEGRAPH & TELEPHONE16 citations84
US10890787B2Jan 12, 2021
Optical modulator
NIPPON TELEGRAPH & TELEPHONE7 citations82
US9128348B1Sep 8, 2015
Light modulation circuit
NIPPON TELEGRAPH & TELEPHONE4 citations73
US11340478B2May 24, 2022
Optical transmitter
NIPPON TELEGRAPH & TELEPHONE2 citations72
US10295744B2May 21, 2019
Coherent optical mixer circuit
NIPPON TELEGRAPH & TELEPHONE2 citations72
US10050717B2Aug 14, 2018
Multi-stage interferometer circuit with waveform shaping function
NIPPON TELEGRAPH & TELEPHONE2 citations72
US12099266B2Sep 24, 2024
Optical circuit with common ground configuration for resistors and thermo-optic phase shifters
NIPPON TELEGRAPH & TELEPHONE2 citations71
US11567275B2Jan 31, 2023
Optical module
NIPPON TELEGRAPH & TELEPHONE1 citations61
US11561350B2Jan 24, 2023
Optical module
NIPPON TELEGRAPH & TELEPHONE1 citations61
US10193653B2Jan 29, 2019
Polarization multiplexing optical transmission circuit and polarization multiplexing optical transmission and reception circuit
NIPPON TELEGRAPH & TELEPHONE1 citations61
US11973159B2Apr 30, 2024
Photodetector
NIPPON TELEGRAPH & TELEPHONE1 citations59
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
US10601522B2Mar 24, 2020
Optical receiver
NIPPON TELEGRAPH & TELEPHONE0 citations41
US10720543B2Jul 21, 2020
Photodetector
NIPPON TELEGRAPH & TELEPHONE0 citations40