Tsutomu HIRAO

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Tokyo, JP

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Patents Grantslast 30 patents

Information Patent Grant
Communication system, management computer, and session information...
- Patent number 9,769,265
- Issue date Sep 19, 2017
- Hitachi, Ltd.
- Masashi Yano
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Redundancy switching method
- Patent number 7,895,358
- Issue date Feb 22, 2011
- Hitachi, Ltd.
- Yukihiro Shimmura
- H04 - ELECTRIC COMMUNICATION TECHNIQUE

Patents Applicationslast 30 patents

Information Patent Application
COMMUNICATION SYSTEM, MANAGEMENT COMPUTER, AND SESSION INFORMATION...
- Publication number 20160065678
- Publication date Mar 3, 2016
- Hitachi, Ltd
- Masashi YANO
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
REDUNDANCY SWITCHING METHOD
- Publication number 20080215714
- Publication date Sep 4, 2008
- Yukihiro SHIMMURA
- H04 - ELECTRIC COMMUNICATION TECHNIQUE