Shu Yamamoto

Person

Kamifukuoka-shi, JP

People

Patents Grantslast 30 patents

Information Patent Grant
Optical data transmission method and its system, optical transmitte...
- Patent number 7,142,787
- Issue date Nov 28, 2006
- KDDI Corporation
- Yukio Horiuchi
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Optical amplifier having various control circuitry
- Patent number 6,867,908
- Issue date Mar 15, 2005
- Mitsubishi Denki Kabushiki Kaisha
- Aritomo Uemura
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Optical signal quality supervisory device
- Patent number 6,801,720
- Issue date Oct 5, 2004
- Mitsubishi Denki Kabushiki Kaisha
- Takashi Mizuochi
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Four fiber ring network optical switching circuit using branched in...
- Patent number 6,782,201
- Issue date Aug 24, 2004
- DDI Corporation
- Shu Yamamoto
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Signal demultiplexing device and signal routing device in high spee...
- Patent number 6,741,810
- Issue date May 25, 2004
- DDI Corporation
- Tomohiro Otani
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Optical amplifier having various control circuitry
- Patent number 6,614,588
- Issue date Sep 2, 2003
- Mitsubishi Denki Kabushiki Kaisha
- Aritomo Uemura
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Optical repeater monitoring system and a method thereof
- Patent number 6,556,325
- Issue date Apr 29, 2003
- KDD Corporation
- Yukio Horiuchi
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Optical digital regenerator
- Patent number 6,532,091
- Issue date Mar 11, 2003
- KDD Corporation
- Tetsuya Miyazaki
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Optical amplifying transmission system and optical amplifier
- Patent number 6,504,638
- Issue date Jan 7, 2003
- KDD Corporation
- Keiji Tanaka
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Optical transmitting apparatus
- Patent number 6,459,518
- Issue date Oct 1, 2002
- KDD Corporation
- Masatoshi Suzuki
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Optical pulse position detecting circuit and an optical pulse gener...
- Patent number 6,445,478
- Issue date Sep 3, 2002
- Mitsubishi Denki Kabushiki Kaisha
- Katsuhiro Shimizu
- G02 - OPTICS
Information Patent Grant
Optical switching system
- Patent number 6,434,288
- Issue date Aug 13, 2002
- KDD Corporation
- Aritomo Uemura
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Optical wavelength division multiplexed signal amplifying repeater...
- Patent number 6,377,375
- Issue date Apr 23, 2002
- KDD Corporation
- Hidenori Taga
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Multi-wavelength light source and discrete-wavelength-variable ligh...
- Patent number 6,331,907
- Issue date Dec 18, 2001
- Kokusai Denshin Denwa Kabushiki-Kaisha
- Tetsuya Miyazaki
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Optical wavelength routing device
- Patent number 6,317,534
- Issue date Nov 13, 2001
- Kokusai Denshin Denwa Co., Ltd.
- Tetsuya Miyazaki
- G02 - OPTICS
Information Patent Grant
Multi-wavelength light source and discrete-wavelength-variable ligh...
- Patent number 6,285,477
- Issue date Sep 4, 2001
- Kokusai Denshin Denwa Kabushiki-Kaisha
- Tetsuya Miyazaki
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Optical pulse position detecting circuit and an optical pulse gener...
- Patent number 6,236,488
- Issue date May 22, 2001
- Mitsubishi Denki Kabushiki Kaisha
- Katsuhiro Shimizu
- G02 - OPTICS
Information Patent Grant
Multi-wavelength light source and discrete-wavelength-variable ligh...
- Patent number 6,219,163
- Issue date Apr 17, 2001
- Kokusai Denshin Denwa Kabushiki-Kaisha
- Tetsuya Miyazaki
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Multi-wavelength light source and discrete-wavelength-variable ligh...
- Patent number 6,215,566
- Issue date Apr 10, 2001
- Kokusai Denshin Denwa Kabushiki-Kaisha
- Tetsuya Miyazaki
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Optical amplifying transmission system and optical amplifying repeater
- Patent number 6,188,510
- Issue date Feb 13, 2001
- KDD Corporation
- Noboru Edagawa
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Control signal superimposer
- Patent number 6,188,508
- Issue date Feb 13, 2001
- KDD Corporation
- Yukio Horiuchi
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Wavelength division multiplexed optical processing device and optic...
- Patent number 6,181,449
- Issue date Jan 30, 2001
- Kokusai Denshin Denwa Kabushiki-Kaisha
- Hidenori Taga
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Optical power measuring system terminal station and repeater therefor
- Patent number 6,160,649
- Issue date Dec 12, 2000
- Kokusai Denshin Denwa Kabushiki Kaisha
- Yukio Horiuchi
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Optical amplifying transmission system and optical amplifier
- Patent number 6,115,173
- Issue date Sep 5, 2000
- KDD Corporation
- Keiji Tanaka
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Optical modulating apparatus
- Patent number 6,028,695
- Issue date Feb 22, 2000
- Mitsubishi Denki Kabushiki Kaisha
- Aritomo Uemura
- G02 - OPTICS
Information Patent Grant
Wavelength-division multiplexing optical transmission system
- Patent number 6,021,235
- Issue date Feb 1, 2000
- Kokusai Denshin Denwa Kabushiki Kaisha
- Shu Yamamoto
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Optical transmission device, WDM optical transmission apparatus, an...
- Patent number 6,005,702
- Issue date Dec 21, 1999
- Kokusai Denshin Denwa Kabushiki Kaisha
- Masatoshi Suzuki
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Gain equalizer and optical amplifying transmission line
- Patent number 5,978,529
- Issue date Nov 2, 1999
- Kokusai Denshin Denwa Kabushiki Kaisha
- Hidenori Taga
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Optical transmission system and optical repeater
- Patent number 5,966,228
- Issue date Oct 12, 1999
- Kokusai Denshin Denwa Kabushiki Kaisha
- Shigeyuki Akiba
- G02 - OPTICS
Information Patent Grant
Wavelength converter, optically operational device and optical puls...
- Patent number 5,959,764
- Issue date Sep 28, 1999
- Kokusai Denshin Denwa Kabushiki Kaisha
- Noboru Edagawa
- G02 - OPTICS

Patents Applicationslast 30 patents

Information Patent Application
Optical receiver and optical add/drop apparatus
- Publication number 20040141749
- Publication date Jul 22, 2004
- Tomohiro Otani
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Optical amplifier having various control circuitry
- Publication number 20030184850
- Publication date Oct 2, 2003
- Mitsubishi Denki Kabushiki Kaisha
- Aritomo Uemura
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Four fiber ring network optical switching circuit using branched in...
- Publication number 20020075535
- Publication date Jun 20, 2002
- Shu Yamamoto
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Broadcast type optical network system using loop shaped optical net...
- Publication number 20020063925
- Publication date May 30, 2002
- Tomohiro Otani
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Optical data transmission method and its system, optical transmitte...
- Publication number 20010055136
- Publication date Dec 27, 2001
- Yukio Horiuchi
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Signal demultiplexing device and signal routing device in high spee...
- Publication number 20010021046
- Publication date Sep 13, 2001
- Tomohiro Otani
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
MULTI-WAVELENGTH LIGHT SOURCE AND DISCRETE-WAVELENGTH-VARIABLE LIGH...
- Publication number 20010012144
- Publication date Aug 9, 2001
- TETSUYA MIYAZAKI
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
Optical pulse position detecting circuit and an optical pulse gener...
- Publication number 20010009469
- Publication date Jul 26, 2001
- Mitsubishi Denki Kabushiki Kaisha
- Katsuhiro Shimizu
- G01 - MEASURING TESTING

Shu Yamamoto

Person

Patents Grantslast 30 patents

Optical data transmission method and its system, optical transmitte...

Optical amplifier having various control circuitry

Optical signal quality supervisory device

Four fiber ring network optical switching circuit using branched in...

Signal demultiplexing device and signal routing device in high spee...

Optical amplifier having various control circuitry

Optical repeater monitoring system and a method thereof

Optical digital regenerator

Optical amplifying transmission system and optical amplifier

Optical transmitting apparatus

Optical pulse position detecting circuit and an optical pulse gener...

Optical switching system

Optical wavelength division multiplexed signal amplifying repeater...

Multi-wavelength light source and discrete-wavelength-variable ligh...

Optical wavelength routing device

Multi-wavelength light source and discrete-wavelength-variable ligh...

Optical pulse position detecting circuit and an optical pulse gener...

Multi-wavelength light source and discrete-wavelength-variable ligh...

Multi-wavelength light source and discrete-wavelength-variable ligh...

Optical amplifying transmission system and optical amplifying repeater

Control signal superimposer

Wavelength division multiplexed optical processing device and optic...

Optical power measuring system terminal station and repeater therefor

Optical amplifying transmission system and optical amplifier

Optical modulating apparatus

Wavelength-division multiplexing optical transmission system

Optical transmission device, WDM optical transmission apparatus, an...

Gain equalizer and optical amplifying transmission line

Optical transmission system and optical repeater

Wavelength converter, optically operational device and optical puls...

Patents Applicationslast 30 patents

Optical receiver and optical add/drop apparatus

Optical amplifier having various control circuitry

Four fiber ring network optical switching circuit using branched in...

Broadcast type optical network system using loop shaped optical net...

Optical data transmission method and its system, optical transmitte...

Signal demultiplexing device and signal routing device in high spee...

MULTI-WAVELENGTH LIGHT SOURCE AND DISCRETE-WAVELENGTH-VARIABLE LIGH...

Optical pulse position detecting circuit and an optical pulse gener...