Seiji Nogiwa

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Tokyo, JP

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Patents Grantslast 30 patents

Information Patent Grant
Light source device for frequency division multiplexed optical comm...
- Patent number 6,323,976
- Issue date Nov 27, 2001
- Ando Electric Co., Ltd.
- Seiji Nogiwa
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Optical-frequency-stabilized light source
- Patent number 6,122,087
- Issue date Sep 19, 2000
- Ando Electric Co., Ltd.
- Seiji Nogiwa
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Light source device for frequency division multiplexed optical comm...
- Patent number 6,091,526
- Issue date Jul 18, 2000
- Ando Electric Co., Ltd.
- Seiji Nogiwa
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Optical fiber amplifier
- Patent number 5,633,750
- Issue date May 27, 1997
- Ando Electric Co., Ltd.
- Seiji Nogiwa
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Apparatus for determining noise factor of optical amplifier
- Patent number 5,574,534
- Issue date Nov 12, 1996
- Ando Electric Co., Ltd.
- Seiji Nogiwa
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Optical sweep signal generator
- Patent number 5,548,402
- Issue date Aug 20, 1996
- Ando Electric Co., Ltd.
- Seiji Nogiwa
- H01 - BASIC ELECTRIC ELEMENTS

Patents Applicationslast 30 patents

Information Patent Application
Optical clock extraction circuit
- Publication number 20050271390
- Publication date Dec 8, 2005
- Yokogawa Electric Corporation
- Seiji Nogiwa
- H04 - ELECTRIC COMMUNICATION TECHNIQUE