Inventor · disambiguated record
Hirotaka Ujikawa
Also filed as: UJIKAWA HIROTAKA
18 granted patents·20 pending applications·1 citations·filing 2018–2022
85Inventor score
Files withNIPPON TELEGRAPH & TELEPHONE38
Top patents by PatentIndex Score
38 records- 0166US11360758B2Communication processing device, information processing device, and communication processing device control methodNIPPON TELEGRAPH & TELEPHONE·Filed 2018·Granted Jun 14, 2022·1 cites·13 claims
- 0252US2025142363A1Communication system, management control apparatus and control methodNIPPON TELEGRAPH & TELEPHONE·Filed 2022·Application pending·0 cites
- 0350US11909651B2Communication system, communication apparatus and bandwidth allocation methodNIPPON TELEGRAPH & TELEPHONE·Filed 2019·Granted Feb 20, 2024·0 cites·6 claims
- 0449US12155417B2Optical transmission device, optical communication system, and optical communication methodNIPPON TELEGRAPH & TELEPHONE·Filed 2020·Granted Nov 26, 2024·0 cites·8 claims
- 0548US11849432B2Bandwidth allocation apparatus, bandwidth allocation method, and bandwidth allocation programNIPPON TELEGRAPH & TELEPHONE·Filed 2019·Granted Dec 19, 2023·0 cites·8 claims
- 0647US11924740B2Signal transfer system, signal transfer device, route control device and signal transfer methodNIPPON TELEGRAPH & TELEPHONE·Filed 2020·Granted Mar 5, 2024·0 cites·6 claims
- 0747US2025081270A1Transmission system, switching control apparatus, switching control method and programNIPPON TELEGRAPH & TELEPHONE·Filed 2021·Application pending·0 cites
- 0846US12155413B2Communication device, communication method, communication system and communication programNIPPON TELEGRAPH & TELEPHONE·Filed 2020·Granted Nov 26, 2024·0 cites·7 claims
- 0946US2024405909A1Control apparatus, communication system, control method and programNIPPON TELEGRAPH & TELEPHONE·Filed 2021·Application pending·0 cites
- 1046US2024414646A1Transmission system, electric power control apparatus, electric power control method and programNIPPON TELEGRAPH & TELEPHONE·Filed 2021·Application pending·0 cites
- 1145US12206456B2Wavelength multiplexing communication system and wavelength multiplexing communication methodNIPPON TELEGRAPH & TELEPHONE·Filed 2020·Granted Jan 21, 2025·0 cites·6 claims
- 1245US2023145000A1Monitoring device, communication system, communication control method, and monitoring programNIPPON TELEGRAPH & TELEPHONE·Filed 2020·Application pending·0 cites
- 1345US2023137775A1Base station, wireless communication system, and wireless communication methodNIPPON TELEGRAPH & TELEPHONE·Filed 2020·Application pending·0 cites
- 1445US2023120832A1Monitoring device, communication system, communication control method, and monitoring programNIPPON TELEGRAPH & TELEPHONE·Filed 2020·Application pending·0 cites
- 1543US11888581B2Wavelength multiplexing communication system and wavelength multiplexing communication methodNIPPON TELEGRAPH & TELEPHONE·Filed 2020·Granted Jan 30, 2024·0 cites·1 claims
- 1643US11496406B2Transfer apparatus, transfer method, and transfer programNIPPON TELEGRAPH & TELEPHONE·Filed 2019·Granted Nov 8, 2022·0 cites·6 claims
- 1742US12191985B2Communication control device, communication method, communication system and communication programNIPPON TELEGRAPH & TELEPHONE·Filed 2020·Granted Jan 7, 2025·0 cites·10 claims
- 1842US12009844B2Optical communication system, master station, and optical communication methodNIPPON TELEGRAPH & TELEPHONE·Filed 2020·Granted Jun 11, 2024·0 cites·8 claims
- 1942US11973531B2Optical communication system and master stationNIPPON TELEGRAPH & TELEPHONE·Filed 2020·Granted Apr 30, 2024·0 cites·4 claims
- 2042US11811448B2Optical communication system, optical communication apparatus and optical communication methodNIPPON TELEGRAPH & TELEPHONE·Filed 2020·Granted Nov 7, 2023·0 cites·8 claims
- 2142US11736186B2Optical communication system and master stationNIPPON TELEGRAPH & TELEPHONE·Filed 2020·Granted Aug 22, 2023·0 cites·6 claims
- 2241US12063289B2Communication system, subscriber line terminal apparatus and communication methodNIPPON TELEGRAPH & TELEPHONE·Filed 2020·Granted Aug 13, 2024·0 cites·4 claims
- 2341US12040831B2Optical communication system and master stationNIPPON TELEGRAPH & TELEPHONE·Filed 2020·Granted Jul 16, 2024·0 cites·8 claims
- 2441US2024323575A1Control apparatus, communication system, control method and programNIPPON TELEGRAPH & TELEPHONE·Filed 2021·Application pending·0 cites
- 2541US2023275682A1Communication device, communication method, communication system and communication programNIPPON TELEGRAPH & TELEPHONE·Filed 2020·Application pending·0 cites
- 2640US2023421934A1Communication control device, communication control system, communication control method and communication control programNIPPON TELEGRAPH & TELEPHONE·Filed 2020·Application pending·0 cites
- 2740US2023318730A1Communication device, communication method, communication system and communication programNIPPON TELEGRAPH & TELEPHONE·Filed 2020·Application pending·0 cites
- 2839US2025150387A1Communication system, routing control apparatus, and routing control methodNIPPON TELEGRAPH & TELEPHONE·Filed 2022·Application pending·0 cites
- 2939US2024275627A1Control device, control method, control program, and signal forwarding control systemNIPPON TELEGRAPH & TELEPHONE·Filed 2021·Application pending·0 cites
- 3038US10958349B2Virtual subscriber line terminal station device and control method for virtual subscriber line terminal station deviceNIPPON TELEGRAPH & TELEPHONE·Filed 2018·Granted Mar 23, 2021·0 cites·10 claims
- 3138US2023421506A1Automatic connection controller, automatic connection control method, automatic connection control program and automatic connection control systemNIPPON TELEGRAPH & TELEPHONE·Filed 2020·Application pending·0 cites
- 3237US12225333B2Optical communication system, monitoring device, and monitoring methodNIPPON TELEGRAPH & TELEPHONE·Filed 2020·Granted Feb 11, 2025·0 cites·8 claims
- 3336US2024014897A1Optical communication monitoring deviceNIPPON TELEGRAPH & TELEPHONE·Filed 2020·Application pending·0 cites
- 3436US2023327756A1Communication monitoring apparatus and communication monitoring systemNIPPON TELEGRAPH & TELEPHONE·Filed 2020·Application pending·0 cites
- 3536US2023327755A1Communication monitoring systemNIPPON TELEGRAPH & TELEPHONE·Filed 2020·Application pending·0 cites
- 3636US2023318704A1Optical communication system, monitoring device, and monitoring methodNIPPON TELEGRAPH & TELEPHONE·Filed 2020·Application pending·0 cites
- 3736US2023327757A1Optical communication monitoring deviceNIPPON TELEGRAPH & TELEPHONE·Filed 2020·Application pending·0 cites
- 3835US2023247335A1Optical communication monitoring deviceNIPPON TELEGRAPH & TELEPHONE·Filed 2020·Application pending·0 cites
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →