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Hiroyuki IWAKI
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Kyoto, JP
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Patents Grants
last 30 patents
Information
Patent Grant
Abnormal circuit operation detection system
Patent number
7,796,050
Issue date
Sep 14, 2010
Fujitsu Limited
Takanori Yasui
G01 - MEASURING TESTING
Information
Patent Grant
Drive control circuit, emission control circuit, communication appa...
Patent number
7,483,021
Issue date
Jan 27, 2009
Rohm Co., Ltd.
Isao Yamamoto
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Route determination method used in optical signal transmission system
Patent number
7,421,201
Issue date
Sep 2, 2008
Fujitsu Limited
Megumi Shibata
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Power supply apparatus provided with overcurrent protection function
Patent number
7,081,742
Issue date
Jul 25, 2006
Rohm Co., Ltd.
Tomoyuki Ito
G05 - CONTROLLING REGULATING
Information
Patent Grant
Optical level control method
Patent number
6,937,820
Issue date
Aug 30, 2005
Fujitsu Limited
Hiroyuki Iwaki
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Method of activating optical communication system, channel increasi...
Patent number
6,839,160
Issue date
Jan 4, 2005
Fujitsu Limited
Takashi Tsuda
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
5B6B coding rule inverse conversion circuit for digital transmission
Patent number
5,293,165
Issue date
Mar 8, 1994
Fujitsu Limited
Hiroyuki Iwaki
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Electronic system switchable between its primary circuit and standb...
Patent number
5,289,044
Issue date
Feb 22, 1994
Fujitsu Limited
Hiroyuki Iwaki
G05 - CONTROLLING REGULATING
Patents Applications
last 30 patents
Information
Patent Application
DRIVE CONTROL CIRCUIT, EMISSION CONTROL CIRCUIT, COMMUNICATION APPA...
Publication number
20090096382
Publication date
Apr 16, 2009
Rohm Co., Ltd.
Isao YAMAMOTO
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
Abnormal circuit operation detection system
Publication number
20060242463
Publication date
Oct 26, 2006
FUJITSU LIMITED
Takanori Yasui
G01 - MEASURING TESTING
Information
Patent Application
Route determination method used in optical signal transmission system
Publication number
20060018665
Publication date
Jan 26, 2006
FUJITSU LIMITED
Megumi Shibata
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
Power supply apparatus provided with overcurrent protection function
Publication number
20050275391
Publication date
Dec 15, 2005
Tomoyuki Ito
G05 - CONTROLLING REGULATING
Information
Patent Application
Optical wavelength division multiplexing transmission system
Publication number
20050213967
Publication date
Sep 29, 2005
FUJITSU LIMITED
Hisanori Okano
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
Drive control circuit, emission control circuit, communication appa...
Publication number
20050202851
Publication date
Sep 15, 2005
Isao Yamamoto
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
Optical wavelength division multiplexing transmission system
Publication number
20040208567
Publication date
Oct 21, 2004
FUJITSU LIMITED
Hisanori Okano
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
Method of activating optical communication system, channel increasi...
Publication number
20020154359
Publication date
Oct 24, 2002
FUJITSU LIMITED
Takashi Tsuda
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
Optical level control method
Publication number
20020024690
Publication date
Feb 28, 2002
Hiroyuki Iwaki
H04 - ELECTRIC COMMUNICATION TECHNIQUE