Katsunari Okamoto

Person

Mito, JP

People

Patents Grantslast 30 patents

Information Patent Grant
Optical signal processing device using optical gate
- Patent number 7,155,086
- Issue date Dec 26, 2006
- Nippon Telegraph and Telephone Corporation
- Takashi Saida
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Dispersion slope equalizer
- Patent number 7,020,398
- Issue date Mar 28, 2006
- Nippon Telegraph and Telephone Corporation
- Koichi Takiguchi
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Matrix switch of optical waveguide type and method for manufacturin...
- Patent number 6,954,562
- Issue date Oct 11, 2005
- NTT Electronics Corporation
- Tatsuo Izawa
- G02 - OPTICS
Information Patent Grant
Dispersion slope equalizer
- Patent number 6,912,362
- Issue date Jun 28, 2005
- Nippon Telegraph and Telephone Corporation
- Koichi Takiguchi
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Optical multiplexer and method for its production
- Patent number 6,898,345
- Issue date May 24, 2005
- NTT Electronics Corporation
- Katsunari Okamoto
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Polarization maintaining optical fiber with improved polarization m...
- Patent number 6,788,865
- Issue date Sep 7, 2004
- Nippon Telegraph and Telephone Corporation
- Satoki Kawanishi
- G02 - OPTICS
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
CDMA encoder-decoder, CDMA communication system, WDM-CDMA communica...
- Patent number 6,711,313
- Issue date Mar 23, 2004
- Nippon Telegraph and Telephone Corporation
- Koichi Takiguchi
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Optical signal processing apparatus and optical signal processing m...
- Patent number 6,456,760
- Issue date Sep 24, 2002
- Nippon Telegraph and Telephone Corporation
- Takashi Kurokawa
- G02 - OPTICS
Information Patent Grant
Optical fiber
- Patent number 6,404,966
- Issue date Jun 11, 2002
- Nippon Telegraph and Telephone Corporation
- Satoki Kawanishi
- G02 - OPTICS
Information Patent Grant
Optical waveguide circuit, its manufacturing method and optical wav...
- Patent number 6,304,687
- Issue date Oct 16, 2001
- Nippon Telegraph and Telephone Corporation
- Yasuyuki Inoue
- G02 - OPTICS
Information Patent Grant
Wavelength division multi/demultiplexer
- Patent number 6,278,813
- Issue date Aug 21, 2001
- Nippon Telegraph and Telephone Corporation
- Kazumasa Takada
- G02 - OPTICS
Information Patent Grant
Optical signal processing apparatus and optical signal processing m...
- Patent number 6,122,419
- Issue date Sep 19, 2000
- Nippon Telegraph & Telephone Corporation
- Takashi Kurokawa
- 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
Integrated optical waveguide circuit and optical branch line test s...
- Patent number 5,546,483
- Issue date Aug 13, 1996
- Nippon Telegraph & Telephone Corporation
- Yasuyuki Inoue
- G02 - OPTICS
Information Patent Grant
Single mode channel optical waveguide with a stress-induced birefri...
- Patent number 4,781,424
- Issue date Nov 1, 1988
- Nippon Telegraph & Telephone Corporation
- Masao Kawachi
- G02 - OPTICS
Information Patent Grant
Single mode optical fibers
- Patent number 4,525,027
- Issue date Jun 25, 1985
- Nippon Telegraph and Telephone Public Corp.
- Katsunari Okamoto
- G02 - OPTICS
Information Patent Grant
Single-polarization single-mode optical fiber
- Patent number 4,480,897
- Issue date Nov 6, 1984
- Nippon Telegraph & Telephone Public Corporation
- Katsunari Okamoto
- G02 - OPTICS
Information Patent Grant
Single mode optical fibers
- Patent number 4,372,647
- Issue date Feb 8, 1983
- Nippon Telegraph & Telephone Public Corporation
- Katsunari Okamoto
- G02 - OPTICS

Patents Applicationslast 30 patents

Information Patent Application
Integrated-Optic Fourier Transform Spectrometer Using Twin Waveguid...
- Publication number 20230333008
- Publication date Oct 19, 2023
- Intelligent Fiber Optic Systems Corporation
- Katsunari Okamoto
- G01 - MEASURING TESTING
Information Patent Application
THIN FILM FILTER (TFF) EMBEDDED WAVEGUIDE WDM DEVICE EMPLOYING PARA...
- Publication number 20150168650
- Publication date Jun 18, 2015
- SIPHX CORPORATION
- Katsunari Okamoto
- G02 - OPTICS
Information Patent Application
COMPLEX-FISH (FOURIER-TRANSFORM, INTEGRATED-OPTIC SPATIAL HETERODYN...
- Publication number 20140375999
- Publication date Dec 25, 2014
- Katsunari OKAMOTO
- G01 - MEASURING TESTING
Information Patent Application
Dispersion slope equalizer
- Publication number 20050169630
- Publication date Aug 4, 2005
- Nippon Telegraph and Telephone Corporation
- Koichi Takiguchi
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Matrix switch of optical waveguide type and method for manufacturin...
- Publication number 20040141679
- Publication date Jul 22, 2004
- NTT ELECTRONICS CORPORATION
- Tatsuo Izawa
- G02 - OPTICS
Information Patent Application
Optical multiplexer and method for its production
- Publication number 20030185512
- Publication date Oct 2, 2003
- Katsunari Okamoto
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Optical filter
- Publication number 20030031406
- Publication date Feb 13, 2003
- Takashi Saida
- G02 - OPTICS
Information Patent Application
Polarization maintaining optical fiber with improved polarization m...
- Publication number 20010026667
- Publication date Oct 4, 2001
- Satoki Kawanishi
- G02 - OPTICS
Information Patent Application
Optical signal processing device using optical gate
- Publication number 20010022878
- Publication date Sep 20, 2001
- Takashi Saida
- G02 - OPTICS
Information Patent Application
CDMA encoder-decoder, CDMA communication system, WDM-CDMA communica...
- Publication number 20010010739
- Publication date Aug 2, 2001
- Koichi Takiguchi
- G02 - OPTICS

Katsunari Okamoto

Person

Patents Grantslast 30 patents

Optical signal processing device using optical gate

Dispersion slope equalizer

Matrix switch of optical waveguide type and method for manufacturin...

Dispersion slope equalizer

Optical multiplexer and method for its production

Polarization maintaining optical fiber with improved polarization m...

Optical filter

CDMA encoder-decoder, CDMA communication system, WDM-CDMA communica...

Optical signal processing apparatus and optical signal processing m...

Optical fiber

Optical waveguide circuit, its manufacturing method and optical wav...

Wavelength division multi/demultiplexer

Optical signal processing apparatus and optical signal processing m...

Arrayed-waveguide grating

Integrated optical waveguide circuit and optical branch line test s...

Single mode channel optical waveguide with a stress-induced birefri...

Single mode optical fibers

Single-polarization single-mode optical fiber

Single mode optical fibers

Patents Applicationslast 30 patents

Integrated-Optic Fourier Transform Spectrometer Using Twin Waveguid...

THIN FILM FILTER (TFF) EMBEDDED WAVEGUIDE WDM DEVICE EMPLOYING PARA...

COMPLEX-FISH (FOURIER-TRANSFORM, INTEGRATED-OPTIC SPATIAL HETERODYN...

Dispersion slope equalizer

Matrix switch of optical waveguide type and method for manufacturin...

Optical multiplexer and method for its production

Optical filter

Polarization maintaining optical fiber with improved polarization m...

Optical signal processing device using optical gate

CDMA encoder-decoder, CDMA communication system, WDM-CDMA communica...