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Kawasaki, JP
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Patents Grants
last 30 patents
Information
Patent Grant
Raman amplifier and raman amplifier adjustment method
Patent number
8,564,876
Issue date
Oct 22, 2013
Fujitsu Limited
Maki Hiraizumi
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Raman amplifier and raman amplifier adjustment method
Patent number
8,339,698
Issue date
Dec 25, 2012
Fujitsu Limited
Maki Hiraizumi
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Multistage optical amplifier with gain control using pump ratio
Patent number
7,929,201
Issue date
Apr 19, 2011
Fujitsu Limited
Tatsuya Tsuzuki
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Optical amplifying apparatus for wavelength division multiplexed si...
Patent number
7,612,936
Issue date
Nov 3, 2009
Fujitsu Limited
Kaoru Usui
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Raman amplifier and Raman amplifier adjustment method
Patent number
7,554,721
Issue date
Jun 30, 2009
Fujitsu Limited
Maki Hiraizumi
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Optical amplifier
Patent number
7,145,717
Issue date
Dec 5, 2006
Fujitsu Limited
Masao Nakata
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Optical module packaged with molded resin
Patent number
6,181,854
Issue date
Jan 30, 2001
Fujitsu Limited
Takashi Kojima
G02 - OPTICS
Information
Patent Grant
Optical semiconductor assembly having a conductive float pad
Patent number
5,814,871
Issue date
Sep 29, 1998
Fujitsu Ltd.
Hiroyuki Furukawa
H01 - BASIC ELECTRIC ELEMENTS
Patents Applications
last 30 patents
Information
Patent Application
RAMAN AMPLIFIER AND RAMAN AMPLIFIER ADJUSTMENT METHOD
Publication number
20120307351
Publication date
Dec 6, 2012
Fujitsu Limited
Maki Hiraizumi
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Application
RAMAN AMPLIFIER AND RAMAN AMPLIFIER ADJUSTMENT METHOD
Publication number
20110019268
Publication date
Jan 27, 2011
Fujitsu Limited
Maki Hiraizumi
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
RAMAN AMPLIFIER AND RAMAN AMPLIFIER ADJUSTMENT METHOD
Publication number
20090153951
Publication date
Jun 18, 2009
FUJITSU LIMITED
Maki Hiraizumi
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
Optical amplifier
Publication number
20080316591
Publication date
Dec 25, 2008
FUJITSU LIMITED
Tatsuya Tsuzuki
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
Raman amplifier and raman amplifier adjustment method
Publication number
20050024712
Publication date
Feb 3, 2005
FUJITSU LIMITED
Maki Hiraizumi
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
Optical amplifier
Publication number
20040174586
Publication date
Sep 9, 2004
FUJITSU LIMITED
Masao Nakata
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
Light amplifying apparatus for wavelength division multiplexing cap...
Publication number
20040057732
Publication date
Mar 25, 2004
FUJITSU LIMITED
Kaoru Usui
H04 - ELECTRIC COMMUNICATION TECHNIQUE