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Naomasa Shimojoh
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Kawasaki, JP
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Patents Grants
last 30 patents
Information
Patent Grant
Optical transmission method and optical transmission system utilizi...
Patent number
6,930,823
Issue date
Aug 16, 2005
Fujitsu Limited
Hiroshi Nakamoto
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Optical amplifier
Patent number
6,882,466
Issue date
Apr 19, 2005
Fujitsu Limited
Naomasa Shimojoh
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Gain equalizer which includes a plurality of optical filters for eq...
Patent number
6,807,376
Issue date
Oct 19, 2004
Fujitsu Limited
Naomasa Shimojoh
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Optical repeater using raman amplification, wavelength division mul...
Patent number
6,606,188
Issue date
Aug 12, 2003
Fujitsu Limited
Naomasa Shimojoh
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Optical amplifier and optical amplification method for amplifying w...
Patent number
6,480,328
Issue date
Nov 12, 2002
Fujitsu Limited
Naomasa Shimojoh
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Method of equalizing gain utilizing asymmetrical loss-wavelength ch...
Patent number
6,417,960
Issue date
Jul 9, 2002
Fujitsu Limited
Naomasa Shimojoh
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Gain equalizer which includes a plurality of optical filters for eq...
Patent number
6,344,914
Issue date
Feb 5, 2002
Fujitsu Limited
Naomasa Shimojoh
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Optical amplifier and wave length division multiplexed light transm...
Patent number
6,268,955
Issue date
Jul 31, 2001
Fujitsu Limited
Naomasa Shimojoh
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Active optical fiber and optical fiber amplifier
Patent number
6,061,172
Issue date
May 9, 2000
Fujitsu Limited
Takao Naito
H01 - BASIC ELECTRIC ELEMENTS
Patents Applications
last 30 patents
Information
Patent Application
Transmission device having wavelength-band-specific optical amplifi...
Publication number
20030081285
Publication date
May 1, 2003
Naomasa Shimojoh
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
Optical transmission method and optical transmission system utilizi...
Publication number
20030011874
Publication date
Jan 16, 2003
FUJITSU LIMITED
Hiroshi Nakamoto
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Application
Optical repeater using raman amplification, wavelength division mul...
Publication number
20020122242
Publication date
Sep 5, 2002
Naomasa Shimojoh
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
Gain equalizer which includes a plurality of optical filters for eq...
Publication number
20020033995
Publication date
Mar 21, 2002
FUJITSU LIMITED
Naomasa Shimojoh
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Application
Optical amplifier and optical amplification method
Publication number
20010048545
Publication date
Dec 6, 2001
Naomasa Shimojoh
H04 - ELECTRIC COMMUNICATION TECHNIQUE