Kenichi Sakamoto

Person

Kawasaki, JP

People

Patents Grantslast 30 patents

Information Patent Grant
VPN composing method, interwork router, packet communication method...
- Patent number 9,124,531
- Issue date Sep 1, 2015
- Hitachi, Ltd.
- Kenichi Sakamoto
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
VPN composing method, interwork router, packet communication method...
- Patent number 8,582,587
- Issue date Nov 12, 2013
- Hitachi, Ltd.
- Kenichi Sakamoto
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
IP broadcasting system and a multicast group management apparatus f...
- Patent number 8,522,288
- Issue date Aug 27, 2013
- Hitachi, Ltd.
- Hiroki Ikeda
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Optical access system, optical switching unit and optical line term...
- Patent number 8,401,384
- Issue date Mar 19, 2013
- Hitachi, Ltd.
- Koji Wakayama
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Optical access system and optical line terminal
- Patent number 8,380,065
- Issue date Feb 19, 2013
- Hitachi, Ltd.
- Michitaka Okuno
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Network system and data transfer device
- Patent number 8,305,907
- Issue date Nov 6, 2012
- Hitachi, Ltd.
- Masahiko Mizutani
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Clock data recovery circuit
- Patent number 8,290,107
- Issue date Oct 16, 2012
- Hitachi, Ltd.
- Masayuki Takase
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Optical access system
- Patent number 8,290,369
- Issue date Oct 16, 2012
- Hitachi, Ltd.
- Kenichi Sakamoto
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Passive optical network system and wavelength assignment method
- Patent number 8,260,135
- Issue date Sep 4, 2012
- Hitachi, Ltd.
- Tohru Kazawa
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Optical line terminal capable of active bandwidth allocation for pa...
- Patent number 8,184,977
- Issue date May 22, 2012
- Hitachi, Ltd.
- Tohru Kazawa
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Network system and node
- Patent number 8,169,895
- Issue date May 1, 2012
- Hitachi, Ltd.
- Masayuki Takase
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
PON system
- Patent number 8,098,678
- Issue date Jan 17, 2012
- Hitachi, Ltd.
- Hideki Endo
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Passive optical network system, optical line terminal, and optical...
- Patent number 8,036,532
- Issue date Oct 11, 2011
- Hitachi, Ltd.
- Kenichi Sakamoto
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Label switching type of packet forwarding apparatus
- Patent number 8,014,420
- Issue date Sep 6, 2011
- Hitachi, Ltd.
- Kazuho Miki
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
VPN composing method, interwork router, packet communication method...
- Patent number 7,983,281
- Issue date Jul 19, 2011
- Hitachi, Ltd.
- Kenichi Sakamoto
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Network apparatus for redundant multicast
- Patent number 7,974,282
- Issue date Jul 5, 2011
- Alaxala Networks Corporation
- Takeshi Shibata
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Optical line terminating apparatus and optical communication system
- Patent number 7,936,991
- Issue date May 3, 2011
- Hitachi, Ltd.
- Toshiki Sugawara
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Packet forwarding apparatus using token bucket algorithm and leaky...
- Patent number 7,908,390
- Issue date Mar 15, 2011
- Hitachi, Ltd.
- Masayuki Takase
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Optical line terminal capable of active bandwidth allocation for pa...
- Patent number 7,889,990
- Issue date Feb 15, 2011
- Hitachi, Ltd.
- Tohru Kazawa
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
VPN composing method, interwork router, packet communication method...
- Patent number 7,881,311
- Issue date Feb 1, 2011
- Hitachi, Ltd.
- Kenichi Sakamoto
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Passive optical network system and wavelength assignment method
- Patent number 7,873,277
- Issue date Jan 18, 2011
- Hitachi, Ltd.
- Tohru Kazawa
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Variable length packet communication device
- Patent number 7,869,441
- Issue date Jan 11, 2011
- Hitachi, Ltd.
- Kenichi Sakamoto
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Optical line terminal and optical network unit capable of alarm tra...
- Patent number 7,840,137
- Issue date Nov 23, 2010
- Hitachi, Ltd.
- Tohru Kazawa
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Optical access system
- Patent number 7,773,880
- Issue date Aug 10, 2010
- Hitachi, Ltd.
- Kenichi Sakamoto
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Log analysis system, method and apparatus
- Patent number 7,752,663
- Issue date Jul 6, 2010
- Hitachi, Ltd.
- Hirofumi Nakakoji
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Grant
Passive optical network system, optical line terminal, and optical...
- Patent number 7,734,178
- Issue date Jun 8, 2010
- Hitachi, Ltd.
- Kenichi Sakamoto
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Switching center for mobile handover
- Patent number 7,729,699
- Issue date Jun 1, 2010
- Hitachi Communication Technologies, Ltd.
- Tsutomu Kusaki
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Apparatus and method for interworking between MPLS network and non-...
- Patent number 7,633,954
- Issue date Dec 15, 2009
- Hitachi, Ltd.
- Koji Wakayama
- 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
PON system
- Patent number 7,602,800
- Issue date Oct 13, 2009
- Hitachi Communication Technologies, Ltd.
- Hideki Endo
- H04 - ELECTRIC COMMUNICATION TECHNIQUE

Patents Applicationslast 30 patents

Information Patent Application
VPN COMPOSING METHOD, INTERWORK ROUTER, PACKET COMMUNICATION METHOD...
- Publication number 20140050226
- Publication date Feb 20, 2014
- Hitachi, Ltd
- Kenichi Sakamoto
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
LABEL SWITCHING TYPE OF PACKET FORWARDING APPARATUS
- Publication number 20110305242
- Publication date Dec 15, 2011
- Hitachi, Ltd
- Kazuho Miki
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
VPN COMPOSING METHOD, INTERWORK ROUTER, PACKET COMMUNICATION METHOD...
- Publication number 20110268129
- Publication date Nov 3, 2011
- Hitachi, Ltd
- Kenichi Sakamoto
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
OPTICAL LINE TERMINAL CAPABLE OF ACTIVE BANDWIDTH ALLOCATION FOR PA...
- Publication number 20110091211
- Publication date Apr 21, 2011
- Hitachi, Ltd
- Tohru KAZAWA
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
PASSIVE OPTICAL NETWORK SYSTEM AND WAVELENGTH ASSIGNMENT METHOD
- Publication number 20110091213
- Publication date Apr 21, 2011
- Hitachi, Ltd
- Tohru KAWAZA
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
PASSIVE OPTICAL NETWORK SYSTEM, OPTICAL LINE TERMINAL, AND OPTICAL...
- Publication number 20100221007
- Publication date Sep 2, 2010
- Hitachi, Ltd
- Kenichi Sakamoto
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
OPTICAL ACCESS SYSTEM AND OPTICAL LINE TERMINAL
- Publication number 20100104286
- Publication date Apr 29, 2010
- Hitachi, Ltd
- Michitaka OKUNO
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
OPTICAL ACCESS SYSTEM, OPTICAL SWITCHING UNIT AND OPTICAL LINE TERM...
- Publication number 20100021160
- Publication date Jan 28, 2010
- Hitachi, Ltd
- Koji WAKAYAMA
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
PON SYSTEM
- Publication number 20100021161
- Publication date Jan 28, 2010
- Hitachi Communication Technologies, Ltd.
- Hideki Endo
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
LABEL SWITCHING TYPE OF PACKET FORWARDING APPARATUS
- Publication number 20090323694
- Publication date Dec 31, 2009
- Hitachi, Ltd
- Kazuho Miki
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Clock data recovery circuit
- Publication number 20090232265
- Publication date Sep 17, 2009
- Hitachi, Ltd.
- Masayuki Takase
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Packet forwarding apparatus using token bucket algorithm and leaky...
- Publication number 20090210553
- Publication date Aug 20, 2009
- Hitachi Communication Technologies, Ltd.
- Masayuki Takase
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Network System and Data Transfer Device
- Publication number 20090201819
- Publication date Aug 13, 2009
- Hitachi Communication Technologies, Ltd.
- Masahiko Mizutani
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
OPTICAL ACCESS NETWORK AND OPTICAL SWITCHING SYSTEMS
- Publication number 20090196606
- Publication date Aug 6, 2009
- Morihito MIYAGI
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Optical access system
- Publication number 20090162055
- Publication date Jun 25, 2009
- Hitachi Communication Technologies, Ltd.
- Kenichi Sakamoto
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Network system, data transmission device, session monitor system an...
- Publication number 20090080655
- Publication date Mar 26, 2009
- Hitachi, Ltd.
- Hitomi Nakamura
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Optical line terminating apparatus and optical communication system
- Publication number 20090080888
- Publication date Mar 26, 2009
- Hitachi Communication Technologies, Ltd.
- Toshiki Sugawara
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
OPTICAL LINE TERMINAL CAPABLE OF ACTIVE BANDWIDTH ALLOCATION FOR PA...
- Publication number 20080279554
- Publication date Nov 13, 2008
- Tohru Kazawa
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
OPTICAL LINE TERMINAL AND OPTICAL NETWORK UNIT CAPABLE OF ALARM TRA...
- Publication number 20080279549
- Publication date Nov 13, 2008
- Tohru Kazawa
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
METHOD FOR RECEIVING IP BROADCAST AND A RECEIVING TERMINAL
- Publication number 20080216143
- Publication date Sep 4, 2008
- Hiroki Ikeda
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Optical access system
- Publication number 20080181604
- Publication date Jul 31, 2008
- Hitachi Communication Technologies, Ltd.
- Kenichi Sakamoto
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Passive optical network system and wavelength assignment method
- Publication number 20080166127
- Publication date Jul 10, 2008
- Hitachi Communication Technologies, Ltd.
- Tohru Kazawa
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
IP BROADCASTING SYSTEM AND A MULTICAST GROUP MANAGEMENT APPARATUS F...
- Publication number 20080155612
- Publication date Jun 26, 2008
- Hiroki Ikeda
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
PASSIVE OPTICAL NETWORK SYSTEM, OPTICAL LINE TERMINAL, AND OPTICAL...
- Publication number 20080138072
- Publication date Jun 12, 2008
- Kenichi SAKAMOTO
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Network apparatus for redundant multicast
- Publication number 20080130644
- Publication date Jun 5, 2008
- ALAXALA Networks Corporation
- Takeshi Shibata
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
VPN COMPOSING METHOD, INTERWORK ROUTER, PACKET COMMUNICATION METHOD...
- Publication number 20070258457
- Publication date Nov 8, 2007
- Kenichi Sakamoto
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Network system and node
- Publication number 20070242604
- Publication date Oct 18, 2007
- Hitachi Communication Technologies, Ltd.
- Masayuki Takase
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
PON system
- Publication number 20070237177
- Publication date Oct 11, 2007
- Hideki Endo
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Network system for managing QoS
- Publication number 20070177604
- Publication date Aug 2, 2007
- Hitachi, Ltd.
- Yoji Ozawa
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Packet switching apparatus
- Publication number 20070110060
- Publication date May 17, 2007
- Hitachi, Ltd.
- Kazuho Miki
- H04 - ELECTRIC COMMUNICATION TECHNIQUE

Kenichi Sakamoto

Person

Patents Grantslast 30 patents

VPN composing method, interwork router, packet communication method...

VPN composing method, interwork router, packet communication method...

IP broadcasting system and a multicast group management apparatus f...

Optical access system, optical switching unit and optical line term...

Optical access system and optical line terminal

Network system and data transfer device

Clock data recovery circuit

Optical access system

Passive optical network system and wavelength assignment method

Optical line terminal capable of active bandwidth allocation for pa...

Network system and node

PON system

Passive optical network system, optical line terminal, and optical...

Label switching type of packet forwarding apparatus

VPN composing method, interwork router, packet communication method...

Network apparatus for redundant multicast

Optical line terminating apparatus and optical communication system

Packet forwarding apparatus using token bucket algorithm and leaky...

Optical line terminal capable of active bandwidth allocation for pa...

VPN composing method, interwork router, packet communication method...

Passive optical network system and wavelength assignment method

Variable length packet communication device

Optical line terminal and optical network unit capable of alarm tra...

Optical access system

Log analysis system, method and apparatus

Passive optical network system, optical line terminal, and optical...

Switching center for mobile handover

Apparatus and method for interworking between MPLS network and non-...

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

PON system

Patents Applicationslast 30 patents

VPN COMPOSING METHOD, INTERWORK ROUTER, PACKET COMMUNICATION METHOD...

LABEL SWITCHING TYPE OF PACKET FORWARDING APPARATUS

VPN COMPOSING METHOD, INTERWORK ROUTER, PACKET COMMUNICATION METHOD...

OPTICAL LINE TERMINAL CAPABLE OF ACTIVE BANDWIDTH ALLOCATION FOR PA...

PASSIVE OPTICAL NETWORK SYSTEM AND WAVELENGTH ASSIGNMENT METHOD

PASSIVE OPTICAL NETWORK SYSTEM, OPTICAL LINE TERMINAL, AND OPTICAL...

OPTICAL ACCESS SYSTEM AND OPTICAL LINE TERMINAL

OPTICAL ACCESS SYSTEM, OPTICAL SWITCHING UNIT AND OPTICAL LINE TERM...

PON SYSTEM

LABEL SWITCHING TYPE OF PACKET FORWARDING APPARATUS

Clock data recovery circuit

Packet forwarding apparatus using token bucket algorithm and leaky...

Network System and Data Transfer Device

OPTICAL ACCESS NETWORK AND OPTICAL SWITCHING SYSTEMS

Optical access system

Network system, data transmission device, session monitor system an...

Optical line terminating apparatus and optical communication system

OPTICAL LINE TERMINAL CAPABLE OF ACTIVE BANDWIDTH ALLOCATION FOR PA...

OPTICAL LINE TERMINAL AND OPTICAL NETWORK UNIT CAPABLE OF ALARM TRA...

METHOD FOR RECEIVING IP BROADCAST AND A RECEIVING TERMINAL

Optical access system

Passive optical network system and wavelength assignment method

IP BROADCASTING SYSTEM AND A MULTICAST GROUP MANAGEMENT APPARATUS F...

PASSIVE OPTICAL NETWORK SYSTEM, OPTICAL LINE TERMINAL, AND OPTICAL...

Network apparatus for redundant multicast

VPN COMPOSING METHOD, INTERWORK ROUTER, PACKET COMMUNICATION METHOD...

Network system and node

PON system

Network system for managing QoS

Packet switching apparatus