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Akira Himeno
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Mito-shi, JP
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Patents Grants
last 30 patents
Information
Patent Grant
Planar optical waveguide
Patent number
8,615,146
Issue date
Dec 24, 2013
NTT Electronics Corporation
Mitsuru Nagano
G02 - OPTICS
Information
Patent Grant
Optical module and optical switch
Patent number
7,974,502
Issue date
Jul 5, 2011
Nippon Telegraph and Telephone Corporation
Shinji Mino
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Optical module and optical switch constituting the same
Patent number
7,206,473
Issue date
Apr 17, 2007
Nippon Telegraph and Telephone Corporation
Shinji Mino
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Optical module and optical switch constituting the same
Patent number
7,177,495
Issue date
Feb 13, 2007
Nippon Telegraph and Telephone Corporation
Shinji Mino
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Optical module and optical switch constituting the same
Patent number
7,116,859
Issue date
Oct 3, 2006
Nippon Telegraph and Telephone Corporation
Shinji Mino
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Optical module and optical switch constituting the same
Patent number
6,999,652
Issue date
Feb 14, 2006
Nippon Telegraph and Telephone Corporation
Shinji Mino
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Optical filter
Patent number
6,724,957
Issue date
Apr 20, 2004
Nippon Telegraph and Telephone Corporation
Takashi Saida
G02 - OPTICS
Information
Patent Grant
Optical multi/demultiplexer
Patent number
6,606,433
Issue date
Aug 12, 2003
Nippon Telegraph and Telephone Corporation
Manabu Oguma
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
No polarization dependent waveguide type optical circuit
Patent number
6,546,161
Issue date
Apr 8, 2003
Nippon Telegraph and Telephone Corporation
Masayuki Okuno
G02 - OPTICS
Information
Patent Grant
Frequency stabilized laser and method for preparing thereof
Patent number
6,320,888
Issue date
Nov 20, 2001
Nippon Telegraph and Telephone Corporation
Takuya Tanaka
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
WDM filter
Patent number
6,229,938
Issue date
May 8, 2001
Nippon Telegraph and Telephone Corporation
Yoshinori Hibino
G02 - OPTICS
Information
Patent Grant
Arrayed-waveguide grating
Patent number
5,943,452
Issue date
Aug 24, 1999
Nippon Telegraph & Telephone Corporation
Akira Himeno
G02 - OPTICS
Information
Patent Grant
Compact optical switching module including thin-film heaters and tr...
Patent number
5,513,285
Issue date
Apr 30, 1996
Oki Electric Industry Co. Ltd.
Toshiyuki Kawashima
G02 - OPTICS
Patents Applications
last 30 patents
Information
Patent Application
PLANAR OPTICAL WAVEGUIDE
Publication number
20110110629
Publication date
May 12, 2011
Mitsuru Nagano
G02 - OPTICS
Information
Patent Application
OPTICAL MODULE AND OPTICAL SWITCH
Publication number
20070154137
Publication date
Jul 5, 2007
NIPPON TELEGRAPH AND TELEPHONE CORPORATION
Shinji Mino
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
Optical module and optical switch constituting the same
Publication number
20060034564
Publication date
Feb 16, 2006
Shinji Mino
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
Optical module and optical switch constituting the same
Publication number
20060034565
Publication date
Feb 16, 2006
Nippon Telegraph and Telephone Corporation
Shinji Mino
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
Optical module and optical switch constituting the same
Publication number
20060034563
Publication date
Feb 16, 2006
Nippon Telegraph and Telephone Corporation
Shinji Mino
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
Optical module and optical switch constituting the same
Publication number
20040086220
Publication date
May 6, 2004
Nippon Telegraph and Telephone Corporation
Shinji Mino
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
Optical filter
Publication number
20030031406
Publication date
Feb 13, 2003
Takashi Saida
G02 - OPTICS
Information
Patent Application
Optical multi/demultiplexer
Publication number
20020015554
Publication date
Feb 7, 2002
Nippon Telegraph and Telephone Corporation
Manabu Oguma
G02 - OPTICS
Information
Patent Application
No polarization dependent waveguide type optical circuit
Publication number
20010009595
Publication date
Jul 26, 2001
Nippon Telegraph and Telephone Corporation
Masayuki Okuno
G02 - OPTICS