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Chiho Kitahara
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Yokohama, JP
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Patents Grants
last 30 patents
Information
Patent Grant
Network measurement controlling system apparatus and method
Patent number
7,142,512
Issue date
Nov 28, 2006
Hitachi, Ltd.
Emiko Kobayashi
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Method of controlling quality of communication among a plurality of...
Patent number
6,693,533
Issue date
Feb 17, 2004
Hitachi, Ltd.
Tomoichi Ebata
G08 - SIGNALLING
Information
Patent Grant
Surveillance system and network system
Patent number
6,501,377
Issue date
Dec 31, 2002
Hitachi, Ltd.
Tomoichi Ebata
G08 - SIGNALLING
Information
Patent Grant
Surveillance system and network system
Patent number
6,292,098
Issue date
Sep 18, 2001
Hitachi, Ltd.
Tomoichi Ebata
G08 - SIGNALLING
Information
Patent Grant
Network development support system
Patent number
5,999,181
Issue date
Dec 7, 1999
Hitachi, Ltd.
Satoru Tezuka
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Grant
Conference display control method and apparatus for an electronic c...
Patent number
5,995,096
Issue date
Nov 30, 1999
Hitachi, Ltd.
Chiho Kitahara
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Grant
Cooperative information processing method and apparatus utilizing l...
Patent number
5,748,894
Issue date
May 5, 1998
Hitachi, Ltd.
Takeshi Ishizaki
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Grant
Display control method and apparatus for an electronic conference
Patent number
5,745,711
Issue date
Apr 28, 1998
Hitachi, Ltd.
Chiho Kitahara
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Grant
Network development support system
Patent number
5,619,640
Issue date
Apr 8, 1997
Hitachi, Ltd.
Satoru Tezuka
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Grant
Group working system having operator discriminating function
Patent number
5,353,398
Issue date
Oct 4, 1994
Hitachi, Ltd.
Chiho Kitahara
G06 - COMPUTING CALCULATING COUNTING
Patents Applications
last 30 patents
Information
Patent Application
Surveillance system and network system
Publication number
20030095042
Publication date
May 22, 2003
Tomoichi Ebata
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
Surveillance system and network system
Publication number
20020067254
Publication date
Jun 6, 2002
Tomoichi Ebata
H04 - ELECTRIC COMMUNICATION TECHNIQUE