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Yasunori Nagakubo
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Kawasaki, JP
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Patents Grants
last 30 patents
Information
Patent Grant
Optical system, optical module and threshold setting method
Patent number
8,280,662
Issue date
Oct 2, 2012
Fujitsu Limited
Yasunori Nagakubo
G01 - MEASURING TESTING
Information
Patent Grant
Optical-receiving apparatus and bias-voltage-control method used fo...
Patent number
7,970,291
Issue date
Jun 28, 2011
Fujitsu Limited
Yasunori Nagakubo
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Module having a handle to be operated to attach the module to a cage
Patent number
7,648,289
Issue date
Jan 19, 2010
Fujitsu Limited
Makoto Miyoshi
G02 - OPTICS
Information
Patent Grant
Optical transmitter and its control method
Patent number
7,257,332
Issue date
Aug 14, 2007
Fujitsu Limited
Toru Yamazaki
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Optical receiving device
Patent number
7,031,621
Issue date
Apr 18, 2006
Fujitsu Limited
Yasunori Nagakubo
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Laser diode protecting circuit and laser driving current control ci...
Patent number
6,229,833
Issue date
May 8, 2001
Fujitsu Limited
Mitsuharu Noda
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
Optical transmitter, terminal-station apparatus having the optical...
Patent number
6,040,931
Issue date
Mar 21, 2000
Fujitsu Limited
Akimitsu Miyazaki
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Optical transmitter and optical communication system
Patent number
5,973,812
Issue date
Oct 26, 1999
Fujitsu Limited
Keisuke Imai
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Peltier control circuit and a peltier device structure
Patent number
5,966,938
Issue date
Oct 19, 1999
Fujitsu Limited
Yasunori Nagakubo
F25 - REFRIGERATION OR COOLING COMBINED HEATING AND REFRIGERATION SYSTEMS HEA...
Information
Patent Grant
Optical transmitter, optical communication system and optical commu...
Patent number
5,900,959
Issue date
May 4, 1999
Fujitsu Limited
Mitsuharu Noda
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Light transmitter having an automatic bias control circuit
Patent number
5,900,621
Issue date
May 4, 1999
Fujitsu Limited
Yasunori Nagakubo
G02 - OPTICS
Information
Patent Grant
Discrimination circuit capable of automatically optimizing discrimi...
Patent number
5,736,875
Issue date
Apr 7, 1998
Fujitsu Limited
Hisaya Sakamoto
H03 - BASIC ELECTRONIC CIRCUITRY
Information
Patent Grant
Optical amplifier and optical transmission apparatus
Patent number
5,680,246
Issue date
Oct 21, 1997
Fujitsu Limited
Tsukasa Takahashi
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Optical Transmitter
Patent number
5,548,435
Issue date
Aug 20, 1996
Fujitsu Limited
Yoko Tahara
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Peltier control circuit and a peltier device structure
Patent number
5,515,682
Issue date
May 14, 1996
Fujitsu Limited
Yasunori Nagakubo
F25 - REFRIGERATION OR COOLING COMBINED HEATING AND REFRIGERATION SYSTEMS HEA...
Patents Applications
last 30 patents
Information
Patent Application
OPTICAL SYSTEM, OPTICAL MODULE AND THRESHOLD SETTING METHOD
Publication number
20090164158
Publication date
Jun 25, 2009
FUJITSU LIMITED
Yasunori NAGAKUBO
G01 - MEASURING TESTING
Information
Patent Application
Module having a handle to be operated to attach the module to a cage
Publication number
20080187271
Publication date
Aug 7, 2008
FUJITSU LIMITED
Makoto Miyoshi
G02 - OPTICS
Information
Patent Application
Optical-receiving apparatus and bias-voltage-control method used fo...
Publication number
20080138092
Publication date
Jun 12, 2008
FUJITSU LIMITED
Yasunori Nagakubo
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
Optical transmitter and its control method
Publication number
20050249444
Publication date
Nov 10, 2005
FUJITSU LIMITED
Keisuke Imai
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
Optical receiving device
Publication number
20050100350
Publication date
May 12, 2005
FUJITSU LIMITED
Yasunori Nagakubo
H04 - ELECTRIC COMMUNICATION TECHNIQUE