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Noboru Takachio
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Kanagawa-ken, JP
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Patents Grants
last 30 patents
Information
Patent Grant
Node apparatus, optical wavelength division multiplexing network, a...
Patent number
7,433,594
Issue date
Oct 7, 2008
Nippon Telegraph and Telephone Corporation
Noboru Takachio
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Ring network using multi-wavelength generator
Patent number
7,206,510
Issue date
Apr 17, 2007
Nippon Telegraph and Telephone Corporation
Hiroo Suzuki
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Node apparatus, optical wavelength division multiplexing network, a...
Patent number
7,164,861
Issue date
Jan 16, 2007
Nippon Telegraph and Telephone Corporation
Noboru Takachio
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Multi-wavelength optical modulation circuit and wavelength-division...
Patent number
7,127,168
Issue date
Oct 24, 2006
Nippon Telegraph and Telephone Corporation
Jun-ichi Kani
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Polarization scrambler and optical network using the same
Patent number
7,106,970
Issue date
Sep 12, 2006
Nippon Telegraph and Telephone Corporation
Masamichi Fujiwara
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Polarization scrambler and optical network using the same
Patent number
7,031,614
Issue date
Apr 18, 2006
Nippon Telegraph and Telephone Corporation
Masamichi Fujiwara
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Polarization scrambler and optical network using the same
Patent number
6,959,152
Issue date
Oct 25, 2005
Nippon Telegraph and Telephone Corporation
Masamichi Fujiwara
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Multilevel light-intensity modulating circuit
Patent number
6,744,546
Issue date
Jun 1, 2004
Nippon Telegraph and Telephone Corporation
Takuya Nakamura
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Optical amplifier and optical fiber communication system using the...
Patent number
6,678,087
Issue date
Jan 13, 2004
Nippon Telegraph and Telephone Corporation
Hiroji Masuda
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Optical amplifier
Patent number
6,583,924
Issue date
Jun 24, 2003
Nippon Telegraph and Telephone Corporation
Hiroji Masuda
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Wavelength allocation method, a transmission equipment and receivin...
Patent number
6,545,780
Issue date
Apr 8, 2003
Nippon Telegraph and Telephone Corporation
Noboru Takachio
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Optical amplifier
Patent number
6,469,826
Issue date
Oct 22, 2002
Nippon Telegraph and Telephone Corporation
Hiroji Masuda
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Light generation method and light source
Patent number
6,359,724
Issue date
Mar 19, 2002
Nippon Telegraph and Telephone Corporation
Yoshitada Katagiri
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
Optical cross-connect system
Patent number
5,937,117
Issue date
Aug 10, 1999
Nippon Telegraph and Telephone Corporation
Osamu Ishida
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Patents Applications
last 30 patents
Information
Patent Application
Node apparatus, optical wavelength division multiplexing network, a...
Publication number
20070031146
Publication date
Feb 8, 2007
Nippon Telegraph and Telephone Corporation
Noboru Takachio
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
Polarization scrambler and optical network using the same
Publication number
20050220457
Publication date
Oct 6, 2005
Nippon Telegraph and Telephone Corporation
Masamichi Fujiwara
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
Polarization scrambler and optical network using the same
Publication number
20050213991
Publication date
Sep 29, 2005
Nippon Telegraph
Masamichi Fujiwara
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
Polarization scrambler and optical network using the same
Publication number
20030161638
Publication date
Aug 28, 2003
Nippon Telegraph and Telephone Corporation
Masamichi Fujiwara
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
Multilevel light-intensity modulating circuit
Publication number
20030123122
Publication date
Jul 3, 2003
Takuya Nakamura
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
Ring network using multi-wavelength generator
Publication number
20030067649
Publication date
Apr 10, 2003
Nippon Telegraph and Telephone Corporation
Hiroo Suzuki
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
Optical amplifier
Publication number
20020196530
Publication date
Dec 26, 2002
Hiroji Masuda
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
Multi-wavelength optical modulation circuit and wavelength-division...
Publication number
20020191904
Publication date
Dec 19, 2002
Nippon Telegraph and Telephone Corporation
Jun-Ichi Kani
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
Node apparatus, optical wavelength division multiplexing network, a...
Publication number
20010017722
Publication date
Aug 30, 2001
Noboru Takachio
H04 - ELECTRIC COMMUNICATION TECHNIQUE