Toshio Kawazawa

Person

Tokyo, JP

People

Patents Grantslast 30 patents

Information Patent Grant
Optical repeating system and optical amplifying repeater control me...
- Patent number 7,158,728
- Issue date Jan 2, 2007
- Mitsubishi Denki Kabushiki Kaisha
- Yasunori Kasahara
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Optical repeating system and optical amplifying repeater control me...
- Patent number 7,130,544
- Issue date Oct 31, 2006
- Mitsubishi Denki Kabushiki Kaisha
- Yasunori Kasahara
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Gain profile measuring method and system and gain profile controlli...
- Patent number 7,009,693
- Issue date Mar 7, 2006
- KDDI Submarine Cable Systems Inc.
- Kiyoaki Takashina
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Optical repeating system and optical amplifying repeater control me...
- Patent number 6,914,718
- Issue date Jul 5, 2005
- Mitsubishi Denki Kabushiki Kaisha
- Yasunori Kasahara
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Supervisory system of optical amplifier repeater system and supervi...
- Patent number 6,804,469
- Issue date Oct 12, 2004
- Mitsubishi Denki Kabushiki Kaisha
- Yasunori Kasahara
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Apparatus and method for measuring optical characteristics and reco...
- Patent number 6,654,104
- Issue date Nov 25, 2003
- Advantest Corporation
- Eiji Kimura
- G01 - MEASURING TESTING
Information Patent Grant
Measuring system of transmission characteristics
- Patent number 6,594,003
- Issue date Jul 15, 2003
- KDD Corporation
- Yukio Horiuchi
- G01 - MEASURING TESTING
Information Patent Grant
Apparatus and method for measuring optical characteristics and reco...
- Patent number 6,433,865
- Issue date Aug 13, 2002
- Advantest Corporation
- Eiji Kimura
- G01 - MEASURING TESTING
Information Patent Grant
Optical transmission system
- Patent number 6,377,373
- Issue date Apr 23, 2002
- Kokusai Denshin Denwa Kabushiki-Kaisha
- Toshio Kawazawa
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Optical transmission system, optically branching apparatus and opti...
- Patent number 6,327,060
- Issue date Dec 4, 2001
- Kokusai Denshin Denwa Kabushiki-Kaisha
- Tomohiro Otani
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Feed line connection circuit and optical transmission system
- Patent number 6,157,098
- Issue date Dec 5, 2000
- KDD Corporation
- Junichi Kojima
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Demultiplexer device for wavelength-division multiplexed optical fi...
- Patent number 6,115,156
- Issue date Sep 5, 2000
- Kokusai Denshin Denwa Kabushiki Daisha
- Tomohiro Otani
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Noise suppression method for wavelength division multiplexing trans...
- Patent number 5,978,122
- Issue date Nov 2, 1999
- Kokusai Denshin Denwa Kabushiki Kaisha
- Toshio Kawazawa
- H04 - ELECTRIC COMMUNICATION TECHNIQUE

Patents Applicationslast 30 patents

Information Patent Application
Gain profile measuring method and system and gain profile controlli...
- Publication number 20030231888
- Publication date Dec 18, 2003
- Kiyoaki Takashina
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Optical repeating system and optical amplifying repeater control me...
- Publication number 20030011856
- Publication date Jan 16, 2003
- Mitsubishi Denki Kabushiki Kaisha
- Yasunori Kasahara
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Optical repeating system and optical amplifying repeater control me...
- Publication number 20030011857
- Publication date Jan 16, 2003
- Mitsubishi Denki Kabushiki Kaisha
- Yasunori Kasahara
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Optical repeating system and optical amplifying repeater control me...
- Publication number 20030011879
- Publication date Jan 16, 2003
- Mitsubishi Denki Kabushiki Kaisha
- Yasunori Kasahara
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Apparatus and method for measuring optical characteristics and reco...
- Publication number 20020044273
- Publication date Apr 18, 2002
- Eiji Kimura
- G01 - MEASURING TESTING
Information Patent Application
Apparatus and method for measuring optical characteristics and reco...
- Publication number 20020044274
- Publication date Apr 18, 2002
- Eiji Kimura
- G01 - MEASURING TESTING
Information Patent Application
Supervisory system of optical amplifier repeater system and supervi...
- Publication number 20020021473
- Publication date Feb 21, 2002
- Mitsubishi Denki Kabushiki Kaisha
- Yasunori Kasahara
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Gain equalizer
- Publication number 20020009253
- Publication date Jan 24, 2002
- Toshio Kawazawa
- H04 - ELECTRIC COMMUNICATION TECHNIQUE

Toshio Kawazawa

Person

Patents Grantslast 30 patents

Optical repeating system and optical amplifying repeater control me...

Optical repeating system and optical amplifying repeater control me...

Gain profile measuring method and system and gain profile controlli...

Optical repeating system and optical amplifying repeater control me...

Supervisory system of optical amplifier repeater system and supervi...

Apparatus and method for measuring optical characteristics and reco...

Measuring system of transmission characteristics

Apparatus and method for measuring optical characteristics and reco...

Optical transmission system

Optical transmission system, optically branching apparatus and opti...

Feed line connection circuit and optical transmission system

Demultiplexer device for wavelength-division multiplexed optical fi...

Noise suppression method for wavelength division multiplexing trans...

Patents Applicationslast 30 patents

Gain profile measuring method and system and gain profile controlli...

Optical repeating system and optical amplifying repeater control me...

Optical repeating system and optical amplifying repeater control me...

Optical repeating system and optical amplifying repeater control me...

Apparatus and method for measuring optical characteristics and reco...

Apparatus and method for measuring optical characteristics and reco...

Supervisory system of optical amplifier repeater system and supervi...

Gain equalizer