Chikashi Komatsu

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Hitachi, JP

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Patents Grantslast 30 patents

Information Patent Grant
Network system and relay device
- Patent number 10,063,465
- Issue date Aug 28, 2018
- Hitachi, Ltd.
- Tatsuya Maruyama
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Digital Protection control system and digital protection control ap...
- Patent number 9,118,173
- Issue date Aug 25, 2015
- Hitachi, Ltd.
- Chikashi Komatsu
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Multi-terminal power line protection relay system
- Patent number 8,462,475
- Issue date Jun 11, 2013
- Hitachi, Ltd.
- Chikashi Komatsu
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER

Patents Applicationslast 30 patents

Information Patent Application
Network System and Relay Device
- Publication number 20160277288
- Publication date Sep 22, 2016
- Hitachi, Ltd
- Tatsuya MARUYAMA
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Digital Protection Control System and Digital Protection Control Ap...
- Publication number 20140146430
- Publication date May 29, 2014
- Hitachi, Ltd
- Chikashi Komatsu
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Application
MULTI-TERMINAL POWER LINE PROTECTION RELAY SYSTEM
- Publication number 20110310518
- Publication date Dec 22, 2011
- Hitachi, Ltd.
- Chikashi KOMATSU
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER