Akihiro KOIZUMI

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Kawasaki, JP

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Patents Grantslast 30 patents

Information Patent Grant
Network system, network management server, and OAM test method
- Patent number 8,976,681
- Issue date Mar 10, 2015
- Hitachi, Ltd.
- Yoji Ozawa
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Network system and management server
- Patent number 8,862,939
- Issue date Oct 14, 2014
- Hitachi, Ltd.
- Yoji Ozawa
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Apparatus and system for estimating network configuration
- Patent number 8,356,093
- Issue date Jan 15, 2013
- Hitachi, Ltd.
- Akihiro Koizumi
- H04 - ELECTRIC COMMUNICATION TECHNIQUE

Patents Applicationslast 30 patents

Information Patent Application
MANAGEMENT METHOD FOR NETWORK SYSTEM, NETWORK SYSTEM, AND MANAGEMEN...
- Publication number 20130111036
- Publication date May 2, 2013
- Hitachi, Ltd
- Yoji Ozawa
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
NETWORK SYSTEM AND MANAGEMENT SERVER
- Publication number 20120233503
- Publication date Sep 13, 2012
- Hitachi, Ltd
- Yoji OZAWA
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Network System, Network Management Server, and OAM Test Method
- Publication number 20120051263
- Publication date Mar 1, 2012
- Hitachi, Ltd
- Yoji OZAWA
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
APPARATUS AND SYSTEM FOR ESTIMATING NETWORK CONFIGURATION
- Publication number 20110093579
- Publication date Apr 21, 2011
- Hitachi, Ltd.
- Akihiro KOIZUMI
- H04 - ELECTRIC COMMUNICATION TECHNIQUE