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Yasuhiro Hida
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Ibaraaki, JP
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Patents Grants
last 30 patents
Information
Patent Grant
Planar lightwave circuit, design method for wave propagation circui...
Patent number
8,554,040
Issue date
Oct 8, 2013
Nippon Telegraph and Telephone Corporation
Takashi Saida
G02 - OPTICS
Information
Patent Grant
Planar lightwave circuit, design method for wave propagation circui...
Patent number
8,538,222
Issue date
Sep 17, 2013
Nippon Telegraph and Telephone Corporation
Takashi Saida
G02 - OPTICS
Information
Patent Grant
Planar lightwave circuit, design method for wave propagation circui...
Patent number
8,463,097
Issue date
Jun 11, 2013
Nippon Telegraph and Telephone Corporation
Takashi Saida
G02 - OPTICS
Information
Patent Grant
Planar lightwave circuit, design method for wave propagation circui...
Patent number
7,856,163
Issue date
Dec 21, 2010
Nippon Telegraph and Telephone Corporation
Takashi Saida
G02 - OPTICS
Information
Patent Grant
Y branch circuit and method for manufacturing the same
Patent number
7,499,613
Issue date
Mar 3, 2009
NTT Electronics Corporation
Yasuhiro Hida
G02 - OPTICS
Information
Patent Grant
Wavelength multi/demultiplexer
Patent number
7,313,297
Issue date
Dec 25, 2007
Nippon Telegraph and Telephone Corporation
Masahiro Yanagisawa
G02 - OPTICS
Information
Patent Grant
Planar lightwave circuit and optical circuit
Patent number
6,937,797
Issue date
Aug 30, 2005
Nippon Telegraph and Telephone Corporation
Takayuki Mizuno
G02 - OPTICS
Information
Patent Grant
Array waveguide diffraction grating type optical multiplexer/demult...
Patent number
6,904,204
Issue date
Jun 7, 2005
NTT Electronics Corporation
Yasuhiro Hida
G02 - OPTICS
Information
Patent Grant
Silica-based optical waveguide circuit and fabrication method thereof
Patent number
6,775,454
Issue date
Aug 10, 2004
Nippon Telegraph and Telephone Corporation
Mikitaka Itoh
G02 - OPTICS
Information
Patent Grant
Polarization desensitized optical waveguide interferometer
Patent number
6,757,454
Issue date
Jun 29, 2004
Nippon Telegraph and Telephone Corporation
Yasuyuki Inoue
G02 - OPTICS
Information
Patent Grant
Optical waveguide and fabricating method thereof, and optical waveg...
Patent number
6,625,370
Issue date
Sep 23, 2003
Nippon Telegraph and Telephone Corporation
Mikitaka Itoh
G02 - OPTICS
Information
Patent Grant
Optical waveguide circuit
Patent number
6,580,862
Issue date
Jun 17, 2003
Nippon Telegraph and Telephone Corporation
Toshimi Kominato
G02 - OPTICS
Patents Applications
last 30 patents
Information
Patent Application
Planar Lightwave Circuit, Design Method for Wave Propagation Circui...
Publication number
20120311516
Publication date
Dec 6, 2012
Nippon Telegraph and Telephone Corporation
Takashi Saida
G02 - OPTICS
Information
Patent Application
Planar Lightwave Circuit, Design Method for Wave Propagation Circui...
Publication number
20120304143
Publication date
Nov 29, 2012
Nippon Telegraph and Telephone Corporation
Takashi Saida
G02 - OPTICS
Information
Patent Application
Planer Lightwave Circuit, Design Method for Wave Propagation Circui...
Publication number
20100274541
Publication date
Oct 28, 2010
Nippon Telegraph and Telephone Corporation
Takashi Saida
G02 - OPTICS
Information
Patent Application
Planar Lightwave Circuit, Design Method for Wave Propagation Circui...
Publication number
20080273829
Publication date
Nov 6, 2008
Nippon Telegraph and Telephone Corporation
Takashi Saida
G02 - OPTICS
Information
Patent Application
Y branch circuit and method for manufacturing the same
Publication number
20060278960
Publication date
Dec 14, 2006
Nippon Telegraph and Telephone Corporation
Yasuhiro Hida
G02 - OPTICS
Information
Patent Application
Wavelength multiplexer/demultiplexer
Publication number
20060023989
Publication date
Feb 2, 2006
Masashiro Yanagisawa
G02 - OPTICS
Information
Patent Application
Array waveguide diffraction grating type optical multiplexer/branch...
Publication number
20040247243
Publication date
Dec 9, 2004
Yasuhiro Hida
G02 - OPTICS
Information
Patent Application
OPTICAL WAVEGUIDE INTERFEROMETER
Publication number
20020181870
Publication date
Dec 5, 2002
Yasuyuki Inoue
G02 - OPTICS
Information
Patent Application
Silica-based optical waveguide circuit and fabrication method thereof
Publication number
20020168166
Publication date
Nov 14, 2002
Nippon Telegraph and Telephone Corporation
Mikitaka Itoh
G02 - OPTICS
Information
Patent Application
Planar lightwave circuit and optical circuit
Publication number
20020154863
Publication date
Oct 24, 2002
Takayuki Mizuno
G02 - OPTICS
Information
Patent Application
Optical waveguide circuit
Publication number
20020122650
Publication date
Sep 5, 2002
Toshimi Kominato
G02 - OPTICS
Information
Patent Application
Optical waveguide and fabricating method thereof, and optical waveg...
Publication number
20020048443
Publication date
Apr 25, 2002
Nippon Telegraph and Telephone Corporation
Mikitaka Itoh
G02 - OPTICS