Tsutomu Tsurumi

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Patents Grantslast 30 patents

Information Patent Grant
Optical transmitting device, fault determining method and fault dia...
- Patent number 9,520,938
- Issue date Dec 13, 2016
- Fujitsu Limited
- Tsutomu Tsurumi
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Optical transmission apparatus, optical transmission method, and op...
- Patent number 8,200,090
- Issue date Jun 12, 2012
- Fujitsu Limited
- Yuichiro Sakane
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Signal processing device and signal processing method
- Patent number 8,102,945
- Issue date Jan 24, 2012
- Fujitsu Limited
- Tsutomu Tsurumi
- H04 - ELECTRIC COMMUNICATION TECHNIQUE

Patents Applicationslast 30 patents

Information Patent Application
OPTICAL TRANSMISSION SYSTEM, TRANSMISSION APPARATUS, AND METHOD OF...
- Publication number 20170302384
- Publication date Oct 19, 2017
- Fujitsu Limited
- Tsutomu Tsurumi
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
OPTICAL TRANSMITTING DEVICE, FAULT DETERMINING METHOD AND FAULT DIA...
- Publication number 20150365164
- Publication date Dec 17, 2015
- FUJITSU LIMITED
- Tsutomu Tsurumi
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
TRANSMISSION DEVICE AND TRANSMISSION METHOD
- Publication number 20140369697
- Publication date Dec 18, 2014
- Fujitsu Limited
- Tsutomu Tsurumi
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
OPTICAL TRANSMISSION APPARATUS, OPTICAL TRANSMISSION METHOD, AND OP...
- Publication number 20100067917
- Publication date Mar 18, 2010
- FUJITSU LIMITED
- Yuichiro SAKANE
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
SIGNAL PROCESSING DEVICE AND SIGNAL PROCESSING METHOD
- Publication number 20080031393
- Publication date Feb 7, 2008
- Fujitsu Limited
- Tsutomu TSURUMI
- H04 - ELECTRIC COMMUNICATION TECHNIQUE