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Masayuki Okuno
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Hitachinaka-shi, JP
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Patents Grants
last 30 patents
Information
Patent Grant
Waveguide device and module
Patent number
8,625,943
Issue date
Jan 7, 2014
Nippon Telegraph and Telephone Corporation
Shunichi Soma
G02 - OPTICS
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
Interferometer and its fabrication method
Patent number
6,823,094
Issue date
Nov 23, 2004
Nippon Telegraph and Telephone Corporation
Takashi Goh
G02 - OPTICS
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
Guided-wave circuit module and wave-guiding optical component equip...
Patent number
5,327,517
Issue date
Jul 5, 1994
Nippon Telegraph & Telephone Corporation
Yasufumi Yamada
G02 - OPTICS
Information
Patent Grant
Waveguide-type optical matrix switch
Patent number
5,247,594
Issue date
Sep 21, 1993
Nippon Telegraph & Telephone Corporation
Masayuki Okuno
G02 - OPTICS
Information
Patent Grant
Guided-wave optical circuit and method for adjusting a characterist...
Patent number
5,117,470
Issue date
May 26, 1992
Nippon Telegraph & Telephone Corporation
Yasuyuki Inoue
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
WAVEGUIDE DEVICE AND MODULE
Publication number
20110064355
Publication date
Mar 17, 2011
Nippon Telegraph and Telephone Corporation
Shunichi Soma
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
Interferometer and its fabrication method
Publication number
20020126933
Publication date
Sep 12, 2002
Nippon Telegraph and Telephone Corporation
Takashi Goh
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