Tomoaki WATANABE

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Kawasaki, JP

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Patents Grantslast 30 patents

Information Patent Grant
Optical transmission device
- Patent number 12,191,982
- Issue date Jan 7, 2025
- Fujitsu Limited
- Atsushi Kiyama
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Optical transmission system and receiving device
- Patent number 11,909,515
- Issue date Feb 20, 2024
- Fujitsu Limited
- Tomoaki Watanabe
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Wavelength conversion device and transmission system
- Patent number 11,838,103
- Issue date Dec 5, 2023
- Fujitsu Limited
- Tomoaki Watanabe
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Optical transmission device and optical transmission method
- Patent number 9,712,248
- Issue date Jul 18, 2017
- Fujitsu Limited
- Tomoaki Watanabe
- H04 - ELECTRIC COMMUNICATION TECHNIQUE

Patents Applicationslast 30 patents

Information Patent Application
RAMAN AMPLIFICATION DEVICE AND RAMAN AMPLIFICATION METHOD
- Publication number 20240405869
- Publication date Dec 5, 2024
- Fujitsu Limited
- Yusaku YAMAMOTO
- G08 - SIGNALLING
Information Patent Application
OPTICAL TRANSMISSION SYSTEM AND RECEIVING DEVICE
- Publication number 20230239066
- Publication date Jul 27, 2023
- Fujitsu Limited
- Tomoaki WATANABE
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
OPTICAL TRANSMISSION DEVICE
- Publication number 20230208548
- Publication date Jun 29, 2023
- Fujitsu Limited
- Atsushi Kiyama
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
WAVELENGTH CONVERSION DEVICE AND TRANSMISSION SYSTEM
- Publication number 20230024263
- Publication date Jan 26, 2023
- Fujitsu Limited
- Tomoaki WATANABE
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
OPTICAL TRANSMISSION DEVICE AND OPTICAL TRANSMISSION METHOD
- Publication number 20150304050
- Publication date Oct 22, 2015
- FUJITSU LIMITED
- Tomoaki WATANABE
- H04 - ELECTRIC COMMUNICATION TECHNIQUE