Yusaku YAMAMOTO

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Fukuoka, JP

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Patents Grantslast 30 patents

Information Patent Grant
Optical amplification device and optical amplification method
- Patent number 11,677,208
- Issue date Jun 13, 2023
- Fujitsu Limited
- Yusaku Yamamoto
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Optical transmission apparatus and optical transmission method
- Patent number 10,142,047
- Issue date Nov 27, 2018
- Fujitsu Limited
- Yusaku Yamamoto
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Optical transmission device and optical transmission system
- Patent number 9,813,183
- Issue date Nov 7, 2017
- Fujitsu Limited
- Kentaro Nakamura
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Dispersion measurement apparatus using a wavelet transform to deter...
- Patent number 8,848,176
- Issue date Sep 30, 2014
- Fujitsu Limited
- Motoyoshi Sekiya
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Dispersion measurement apparatus using a wavelet transform to deter...
- Patent number 8,810,782
- Issue date Aug 19, 2014
- Fujitsu Limited
- Motoyoshi Sekiya
- H04 - ELECTRIC COMMUNICATION TECHNIQUE

Patents Applicationslast 30 patents

Information Patent Application
OPTICAL AMPLIFICATION DEVICE AND OPTICAL AMPLIFICATION METHOD
- Publication number 20210391681
- Publication date Dec 16, 2021
- Fujitsu Limited
- Yusaku YAMAMOTO
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
OPTICAL TRANSMISSION APPARATUS AND OPTICAL TRANSMISSION METHOD
- Publication number 20180254845
- Publication date Sep 6, 2018
- Fujitsu Limited
- Yusaku YAMAMOTO
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
OPTICAL TRANSMISSION DEVICE AND OPTICAL TRANSMISSION SYSTEM
- Publication number 20160094307
- Publication date Mar 31, 2016
- FUJITSU LIMITED
- Kentaro NAKAMURA
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
DISPERSION MEASUREMENT APPARATUS
- Publication number 20120045160
- Publication date Feb 23, 2012
- Fujitsu Limited
- Motoyoshi SEKIYA
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
OPTICAL-TRANSMISSION-LINE INSPECTION APPARATUS, OPTICAL TRANSMISSIO...
- Publication number 20110236014
- Publication date Sep 29, 2011
- Fujitsu Limited
- Motoyoshi SEKIYA
- H04 - ELECTRIC COMMUNICATION TECHNIQUE