Mitsunobu KIMURA

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Yokohama, JP

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Patents Grantslast 30 patents

Information Patent Grant
Passive optical network system and optical line terminal
- Patent number 8,315,527
- Issue date Nov 20, 2012
- Hitachi, Ltd.
- Mitsunobu Kimura
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Method and apparatus for multiplex transmission
- Patent number 7,372,807
- Issue date May 13, 2008
- Hitachi, Ltd.
- Masaki Ohira
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Method and apparatus for multiplex transmission
- Patent number 6,721,268
- Issue date Apr 13, 2004
- Hitachi, Ltd.
- Masaki Ohira
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Bi-directional line switched ring network system
- Patent number 6,614,754
- Issue date Sep 2, 2003
- Hitachi, Ltd.
- Keiji Usuba
- H04 - ELECTRIC COMMUNICATION TECHNIQUE

Patents Applicationslast 30 patents

Information Patent Application
PASSIVE OPTICAL NETWORK SYSTEM AND OPTICAL LINE TERMINAL
- Publication number 20110103792
- Publication date May 5, 2011
- Hitachi, Ltd.
- MITSUNOBU KIMURA
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Passive Optical Network System, Optical Network Unit, and Optical L...
- Publication number 20090317082
- Publication date Dec 24, 2009
- Mitsunobu KIMURA
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Method and apparatus for multiplex transmission
- Publication number 20040184403
- Publication date Sep 23, 2004
- Hitachi, Ltd.
- Masaki Ohira
- H04 - ELECTRIC COMMUNICATION TECHNIQUE