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Masahiro Takatori
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Yokohama, JP
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Patents Grants
last 30 patents
Information
Patent Grant
Network system including radio network using MPLS
Patent number
8,848,665
Issue date
Sep 30, 2014
Hitachi, Ltd.
Masashi Yano
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Mobile communication system and communication method
Patent number
8,483,063
Issue date
Jul 9, 2013
Hitachi, Ltd.
Masashi Yano
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Mobile communication system for low power consumption, call control...
Patent number
8,311,541
Issue date
Nov 13, 2012
Hitachi, Ltd.
Masashi Yano
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Wireless communication system and base station accommodation server
Patent number
8,254,955
Issue date
Aug 28, 2012
Hitachi, Ltd.
Hitomi Nakamura
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Communication system and access gateway apparatus
Patent number
8,238,356
Issue date
Aug 7, 2012
Hitachi, Ltd.
Hitomi Nakamura
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Method for encoding/decoding error correcting code, transmitting ap...
Patent number
7,512,867
Issue date
Mar 31, 2009
Hitachi, Ltd.
Masaki Ohira
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Optical transmission system constructing method and system
Patent number
7,292,785
Issue date
Nov 6, 2007
Hitachi, Ltd.
Keiji Tomooka
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Optical crossconnect apparatus and optical transmission system
Patent number
7,272,314
Issue date
Sep 18, 2007
Hitachi, Ltd.
Yasuyuki Fukashiro
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Optical transmission system constructing method and system
Patent number
7,167,652
Issue date
Jan 23, 2007
Hitachi, Ltd.
Keiji Tomooka
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Method and apparatus for optical network administration
Patent number
7,139,479
Issue date
Nov 21, 2006
Hitachi, Ltd.
Masaki Ohira
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Method for encoding/decoding error correcting code, transmitting ap...
Patent number
7,024,616
Issue date
Apr 4, 2006
Hitachi, Ltd.
Masaki Ohira
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Router apparatus using ATM switch
Patent number
6,980,553
Issue date
Dec 27, 2005
Hitachi, Ltd.
Kazuho Miki
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Optical one-to-one protection switching apparatus
Patent number
6,975,811
Issue date
Dec 13, 2005
Hitachi, Ltd.
Sunao Kakizaki
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Optical crossconnect apparatus and optical transmission system
Patent number
6,813,445
Issue date
Nov 2, 2004
Hitachi, Ltd.
Yasuyuki Fukashiro
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Optical transmission system constructing method and system
Patent number
6,728,489
Issue date
Apr 27, 2004
Hitachi, Ltd.
Keiji Tomooka
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Router apparatus using ATM switch
Patent number
6,424,662
Issue date
Jul 23, 2002
Hitachi, Ltd.
Kazuho Miki
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Router apparatus using ATM switch
Patent number
6,385,171
Issue date
May 7, 2002
Hitachi, Ltd.
Akihiko Takase
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Optical crossconnect apparatus and optical transmission system
Patent number
6,362,905
Issue date
Mar 26, 2002
Hitachi, Ltd.
Yasuyuki Fukashiro
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Optical transmission equipment which transmits an amplified optical...
Patent number
6,266,169
Issue date
Jul 24, 2001
Hitachi, Ltd.
Keiji Tomooka
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Router apparatus using ATM switch
Patent number
6,046,999
Issue date
Apr 4, 2000
Hitachi, Ltd.
Kazuho Miki
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Multiplexing apparatus for transit of signals between service provi...
Patent number
6,034,954
Issue date
Mar 7, 2000
Hitachi, Ltd.
Akihiko Takase
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Optical transmission equipment which transmits an amplified optical...
Patent number
6,018,405
Issue date
Jan 25, 2000
Hitachi, Ltd.
Keiji Tomooka
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Optical wavelength multiplexing system
Patent number
6,005,699
Issue date
Dec 21, 1999
Hitachi, Ltd.
Keiji Tomooka
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Router apparatus using ATM switch
Patent number
5,963,555
Issue date
Oct 5, 1999
Akihiko Takase
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Optical repeater and optical transmitter
Patent number
5,875,046
Issue date
Feb 23, 1999
Hitachi, Ltd.
Keiji Tomooka
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Optical multiplex transmission equipment and method
Patent number
5,861,972
Issue date
Jan 19, 1999
Hitachi, Ltd.
Keiji Tomooka
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Switching system having means for congestion control by monitoring...
Patent number
5,838,677
Issue date
Nov 17, 1998
Hitachi, Ltd.
Takahiko Kozaki
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Self-healing ring switch and method of controlling the same
Patent number
5,815,489
Issue date
Sep 29, 1998
Hitachi, Ltd.
Masahiro Takatori
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Optical repeater and optical transmitter
Patent number
5,812,289
Issue date
Sep 22, 1998
Hitachi, Ltd.
Keiji Tomooka
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Optical transmission system constructing method and system
Patent number
5,739,932
Issue date
Apr 14, 1998
Hitachi, Ltd.
Keiji Tomooka
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Patents Applications
last 30 patents
Information
Patent Application
GATEWAY DEVICE AND PACKET COMMUNICATION METHOD
Publication number
20130336213
Publication date
Dec 19, 2013
Nodoka MIMURA
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
Network System and Network Apparatus
Publication number
20120177004
Publication date
Jul 12, 2012
Hitachi, Ltd
Masashi YANO
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
Mobile Communication System and Communication Method
Publication number
20110228697
Publication date
Sep 22, 2011
Hitachi, Ltd
Masashi YANO
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
MOBILE COMMUNICATION SYSTEM FOR LOW POWER CONSUMPTION, CALL CONTROL...
Publication number
20100184432
Publication date
Jul 22, 2010
Hitachi, Ltd
Masashi YANO
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
COMMUNICATION SYSTEM AND ACCESS GATEWAY APPARATUS
Publication number
20100020812
Publication date
Jan 28, 2010
Hitachi, Ltd.
Hitomi NAKAMURA
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
WIRELESS COMMUNICATION SYSTEM AND BASE STATION ACCOMMODATION SERVER
Publication number
20090270111
Publication date
Oct 29, 2009
Hitachi Communication Technologies, Ltd.
Hitomi NAKAMURA
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
Optical transmission system constructing method and system
Publication number
20070053687
Publication date
Mar 8, 2007
Keiji Tomooka
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
Method for encoding/decoding error correcting code, transmitting ap...
Publication number
20060212780
Publication date
Sep 21, 2006
Masaki Ohira
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
Optical crossconnect apparatus and optical transmission system
Publication number
20050025481
Publication date
Feb 3, 2005
Yasuyuki Fukashiro
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
Router apparatus using ATM switch
Publication number
20050008025
Publication date
Jan 13, 2005
Kazuho Miki
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
Optical transmission system constructing method and system
Publication number
20040161189
Publication date
Aug 19, 2004
Hitachi, Ltd.
Keiji Tomooka
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
Router apparatus using ATM switch
Publication number
20020136244
Publication date
Sep 26, 2002
Kazuho Miki
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
Method and apparatus for optical network administration
Publication number
20020131101
Publication date
Sep 19, 2002
HITACHI, LTD.
Masaki Ohira
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
Optical crossconnect apparatus and optical transmission system
Publication number
20020093712
Publication date
Jul 18, 2002
Yasuyuki Fukashiro
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
Optical transmission system constructing method and system
Publication number
20020024699
Publication date
Feb 28, 2002
Hitachi, Ltd
Keiji Tomooka
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
Method for encoding/decoding error correcting code, transmitting ap...
Publication number
20010053225
Publication date
Dec 20, 2001
Masaki Ohira
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
Protection switching apparatus for 1 + 1 optical transmission lines
Publication number
20010046074
Publication date
Nov 29, 2001
Sunao Kakizaki
H04 - ELECTRIC COMMUNICATION TECHNIQUE