Inventor
KUDO RIICHI
JP50 patents
⚠️ This page may combine multiple inventors who share the name “KUDO RIICHI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
NIPPON TELEGRAPH & TELEPHONE
36 patentsUS10158402B2Dec 18, 2018
Wireless signal transmitting method and wireless apparatus
NIPPON TELEGRAPH & TELEPHONE9 citations92
US9882614B2Jan 30, 2018
Wireless signal transmitting method and wireless apparatus
NIPPON TELEGRAPH & TELEPHONE12 citations92
US8355637B2Jan 15, 2013
Optical OFDM receiver, optical transmission system, subcarrier separation circuit, and subcarrier separation method
NIPPON TELEGRAPH & TELEPHONE23 citations92
US11509362B2Nov 22, 2022
Wireless signal transmitting method and wireless apparatus
NIPPON TELEGRAPH & TELEPHONE3 citations84
US10778296B2Sep 15, 2020
Wireless signal transmitting method and wireless apparatus
NIPPON TELEGRAPH & TELEPHONE4 citations84
US10491274B2Nov 26, 2019
Wireless signal transmitting method and wireless apparatus
NIPPON TELEGRAPH & TELEPHONE5 citations84
US9621299B2Apr 11, 2017
Coherent communication system, communication method, and transmission method
NIPPON TELEGRAPH & TELEPHONE15 citations84
US11804997B2Oct 31, 2023
Wireless signal transmitting method and wireless apparatus
NIPPON TELEGRAPH & TELEPHONE2 citations73
US11304233B2Apr 12, 2022
Wireless communication system, wireless communication method, wireless LAN access point, and wireless LAN station
NIPPON TELEGRAPH & TELEPHONE2 citations73
US10631337B2Apr 21, 2020
Wireless communication system, wireless communication method, wireless LAN access point, and wireless LAN station
NIPPON TELEGRAPH & TELEPHONE2 citations73
US9872295B2Jan 16, 2018
Wireless communication apparatus and wireless communication method
NIPPON TELEGRAPH & TELEPHONE6 citations73
US9614621B2Apr 4, 2017
Signal generating circuit, optical signal transmitting apparatus, signal receiving circuit, method for establishing optical signal synchronization, and optical signal synchronization system
NIPPON TELEGRAPH & TELEPHONE4 citations73
US9520947B2Dec 13, 2016
Signal generating circuit, optical signal transmitting apparatus, signal receiving circuit, method for establishing optical signal synchronization, and optical signal synchronization system
NIPPON TELEGRAPH & TELEPHONE3 citations73
US10638341B2Apr 28, 2020
Wireless environment information collection system and method
NIPPON TELEGRAPH & TELEPHONE2 citations72
US12034495B2Jul 9, 2024
System, device, method and program that predict communication quality
NIPPON TELEGRAPH & TELEPHONE2 citations67
US12316395B2May 27, 2025
Communication system and terminal
NIPPON TELEGRAPH & TELEPHONE1 citations63
US9370013B2Jun 14, 2016
Wireless communication method, base station, wireless communication system, and communication apparatus
NIPPON TELEGRAPH & TELEPHONE2 citations63
US12289772B2Apr 29, 2025
Wireless communication system and wireless communication method
NIPPON TELEGRAPH & TELEPHONE0 citations62
US12250104B2Mar 11, 2025
Wireless signal transmitting method and wireless apparatus
NIPPON TELEGRAPH & TELEPHONE0 citations62
US11889557B2Jan 30, 2024
Wireless communication system, wireless communication method, wireless LAN access point, and wireless LAN station
NIPPON TELEGRAPH & TELEPHONE0 citations62
US11849487B2Dec 19, 2023
Wireless communication system and wireless communication method
NIPPON TELEGRAPH & TELEPHONE0 citations62
US11523439B2Dec 6, 2022
Wireless communication system and wireless communication method
NIPPON TELEGRAPH & TELEPHONE0 citations62
US11304234B2Apr 12, 2022
Wireless communication system, wireless communication method, wireless LAN access point, and wireless LAN station
NIPPON TELEGRAPH & TELEPHONE0 citations62
US11172509B2Nov 9, 2021
Wireless communication system, wireless communication method, wireless LAN access point, and wireless LAN station
NIPPON TELEGRAPH & TELEPHONE0 citations62
US11025313B2Jun 1, 2021
Wireless signal transmitting method and wireless apparatus
NIPPON TELEGRAPH & TELEPHONE0 citations62
US11026262B2Jun 1, 2021
Wireless communication system and wireless communication method
NIPPON TELEGRAPH & TELEPHONE0 citations62
US9313007B2Apr 12, 2016
Wireless apparatus and training signal transmission method
NIPPON TELEGRAPH & TELEPHONE1 citations52
US12170547B2Dec 17, 2024
Terminal and communication system
NIPPON TELEGRAPH & TELEPHONE0 citations51
US12133114B2Oct 29, 2024
Communication device and communication system
NIPPON TELEGRAPH & TELEPHONE0 citations51
US12028788B2Jul 2, 2024
Communication system and base station
NIPPON TELEGRAPH & TELEPHONE0 citations51
US11044754B2Jun 22, 2021
Wireless communication system and wireless communication method
NIPPON TELEGRAPH & TELEPHONE0 citations51
US10805958B2Oct 13, 2020
Wireless communication system and wireless communication method
NIPPON TELEGRAPH & TELEPHONE0 citations51
US9094973B2Jul 28, 2015
Radio communication method, radio communication system, radio base station, and radio terminal station
NIPPON TELEGRAPH & TELEPHONE0 citations51
US11916612B2Feb 27, 2024
Mobile terminal and communication quality prediction method
NIPPON TELEGRAPH & TELEPHONE0 citations46
US9184809B2Nov 10, 2015
Wireless communication method and access point apparatus
NIPPON TELEGRAPH & TELEPHONE0 citations42
US10477407B2Nov 12, 2019
Wireless communication system, wireless communication method, cooperation control apparatus, terminal apparatus, and licensed band base station apparatus
NIPPON TELEGRAPH & TELEPHONE0 citations41
ISHIHARA KOICHI
4 patentsUS8929750B2Jan 6, 2015
Signal generating circuit, optical signal transmitting apparatus, signal receiving circuit, method for establishing optical signal synchronization, and optical signal synchronization system
ISHIHARA KOICHI53 citations97
US8787769B2Jul 22, 2014
Chromatic dispersion value calculating apparatus, optical signal receiving apparatus, optical signal transmitting apparatus, and chromatic dispersion value calculation method
ISHIHARA KOICHI5 citations72
US8488696B2Jul 16, 2013
Receiver device, communication system and receiving method
ISHIHARA KOICHI1 citations51
US8891555B2Nov 18, 2014
Spatial multiplexing wireless transmission system, spatial multiplexing wireless transmission method and computer program
ISHIHARA KOICHI0 citations41
NAKAGAWA TADAO
3 patentsUS8934782B2Jan 13, 2015
Transmission method, reception method, transmitter apparatus, and receiver device
NAKAGAWA TADAO2 citations60
US8855485B2Oct 7, 2014
Frequency offset estimating method and frequency offset estimating apparatus
NAKAGAWA TADAO2 citations60
US8781029B2Jul 15, 2014
Frequency offset estimation apparatus, reception apparatus, frequency offset estimation method, and reception method
NAKAGAWA TADAO0 citations39
MURAKAMI TOMOKI
2 patentsUS8830965B2Sep 9, 2014
Radio communication method, radio communication system, radio base station, and radio terminal station
MURAKAMI TOMOKI4 citations69
US8897163B2Nov 25, 2014
Wireless communication method, base station, wireless communication system, and communication apparatus
MURAKAMI TOMOKI1 citations49
KUDO RIICHI
2 patentsYAMAZAKI ETSUSHI
2 patentsUS9178614B2Nov 3, 2015
Method for estimating amount of wavelength dispersion, wavelength dispersion compensation circuit, and receiving device
YAMAZAKI ETSUSHI0 citations35
US8971703B2Mar 3, 2015
Wavelength dispersion amount estimation method, wavelength dispersion compensation circuit, and reception device
YAMAZAKI ETSUSHI0 citations35