Norihiro Sakamoto

Person

Yokohama, JP

People

Patents Grantslast 30 patents

Information Patent Grant
Optical multiplexing terminal device, wavelength multiplexing passi...
- Patent number 8,811,819
- Issue date Aug 19, 2014
- Hitachi, Ltd.
- Tohru Kazawa
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Passive optical network system and operating method thereof
- Patent number 8,724,995
- Issue date May 13, 2014
- Hitachi, Ltd.
- Tohru Kazawa
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Encryption apparatus
- Patent number 8,675,870
- Issue date Mar 18, 2014
- Hitachi, Ltd.
- Masaki Ohira
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Optical multiplexing terminating device, passive optical network sy...
- Patent number 8,532,491
- Issue date Sep 10, 2013
- Hitachi, Ltd.
- Norihiro Sakamoto
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Passive optical network system and operation method thereof
- Patent number 8,477,800
- Issue date Jul 2, 2013
- Hitachi, Ltd.
- Tohru Kazawa
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Passive optical network system and optical line terminal
- Patent number 8,374,503
- Issue date Feb 12, 2013
- Hitachi, Ltd.
- Norihiro Sakamoto
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Passive optical network system and optical line terminal
- Patent number 8,005,362
- Issue date Aug 23, 2011
- Hitachi, Ltd.
- Norihiro Sakamoto
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Passive optical network system and ranging system thereof
- Patent number 7,725,031
- Issue date May 25, 2010
- Hitachi, Ltd.
- Tohru Kazawa
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Passive optical network system and ranging system thereof
- Patent number 7,711,268
- Issue date May 4, 2010
- Hitachi, Ltd.
- Tohru Kazawa
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Transmission apparatus with function of multi-step bandwidth assign...
- Patent number 7,620,325
- Issue date Nov 17, 2009
- Hitachi Communication Technologies, Ltd.
- Masahiko Mizutani
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Passive optical network system and ranging system thereof
- Patent number 7,512,341
- Issue date Mar 31, 2009
- Hitachi Communication Technologies, Ltd.
- Tohru Kazawa
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Passive optical network system and ranging system thereof
- Patent number 7,489,869
- Issue date Feb 10, 2009
- Hitachi Communication Technologies, Ltd.
- Tohru Kazawa
- H04 - ELECTRIC COMMUNICATION TECHNIQUE

Patents Applicationslast 30 patents

Information Patent Application
OPTICAL MULTIPLEXING TERMINATING DEVICE, PASSIVE OPTICAL NETWORK SY...
- Publication number 20120106958
- Publication date May 3, 2012
- Hitachi, Ltd.
- Norihiro Sakamoto
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
OPTICAL MULTIPLEXING TERMINATING DEVICE, WAVE-LENGTH MULTIPLEXING P...
- Publication number 20120093509
- Publication date Apr 19, 2012
- Hitachi, Ltd.
- Tohru KAZAWA
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
PASSIVE OPTICAL NETWORK SYSTEM AND OPERATING METHOD THEREOF
- Publication number 20120008948
- Publication date Jan 12, 2012
- HITACHI LTD.
- Tohru Kazawa
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
PASSIVE OPTICAL NETWORK SYSTEM AND OPTICAL LINE TERMINAL
- Publication number 20110293274
- Publication date Dec 1, 2011
- Norihiro SAKAMOTO
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
PASSIVE OPTICAL NETWORK SYSTEM AND OPERATION METHOD THEREOF
- Publication number 20100290783
- Publication date Nov 18, 2010
- Hitachi, Ltd
- Tohru KAZAWA
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
PASSIVE OPTICAL NETWORK SYSTEM AND RANGING SYSTEM THEREOF
- Publication number 20090052896
- Publication date Feb 26, 2009
- Hitachi Communication Technologies, Ltd.
- Tohru Kazawa
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
PASSIVE OPTICAL NETWORK SYSTEM AND RANGING SYSTEM THEREOF
- Publication number 20090052897
- Publication date Feb 26, 2009
- Hitachi Communication Technologies, Ltd.
- Tohru Kazawa
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
PASSIVE OPTICAL NETWORK SYSTEM AND OPTICAL LINE TERMINAL
- Publication number 20090034973
- Publication date Feb 5, 2009
- Norihiro SAKAMOTO
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
PASSIVE OPTICAL NETWORK SYSTEM AND RANGING SYSTEM THEREOF
- Publication number 20080317469
- Publication date Dec 25, 2008
- Hitachi Communication Technologies, Ltd.
- Tohru Kazawa
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Encryption apparatus
- Publication number 20080155255
- Publication date Jun 26, 2008
- Masaki Ohira
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Passive optical network system and ranging system thereof
- Publication number 20080089686
- Publication date Apr 17, 2008
- Tohru Kazawa
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Transmission apparatus with function of multi-step bandwidth assign...
- Publication number 20070064731
- Publication date Mar 22, 2007
- Hitachi Communication Technologies Ltd.
- Masahiko Mizutani
- H04 - ELECTRIC COMMUNICATION TECHNIQUE

Norihiro Sakamoto

Person

Patents Grantslast 30 patents

Optical multiplexing terminal device, wavelength multiplexing passi...

Passive optical network system and operating method thereof

Encryption apparatus

Optical multiplexing terminating device, passive optical network sy...

Passive optical network system and operation method thereof

Passive optical network system and optical line terminal

Passive optical network system and optical line terminal

Passive optical network system and ranging system thereof

Passive optical network system and ranging system thereof

Transmission apparatus with function of multi-step bandwidth assign...

Passive optical network system and ranging system thereof

Passive optical network system and ranging system thereof

Patents Applicationslast 30 patents

OPTICAL MULTIPLEXING TERMINATING DEVICE, PASSIVE OPTICAL NETWORK SY...

OPTICAL MULTIPLEXING TERMINATING DEVICE, WAVE-LENGTH MULTIPLEXING P...

PASSIVE OPTICAL NETWORK SYSTEM AND OPERATING METHOD THEREOF

PASSIVE OPTICAL NETWORK SYSTEM AND OPTICAL LINE TERMINAL

PASSIVE OPTICAL NETWORK SYSTEM AND OPERATION METHOD THEREOF

PASSIVE OPTICAL NETWORK SYSTEM AND RANGING SYSTEM THEREOF

PASSIVE OPTICAL NETWORK SYSTEM AND RANGING SYSTEM THEREOF

PASSIVE OPTICAL NETWORK SYSTEM AND OPTICAL LINE TERMINAL

PASSIVE OPTICAL NETWORK SYSTEM AND RANGING SYSTEM THEREOF

Encryption apparatus

Passive optical network system and ranging system thereof

Transmission apparatus with function of multi-step bandwidth assign...