Tatsuo Izawa

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Tokyo, JP

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Patents Grantslast 30 patents

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
Wavelength multiplexing/demultiplexing unit, wavelength multiplexin...
- Patent number 6,885,823
- Issue date Apr 26, 2005
- NTT Electronics Corporation
- Kuniharu Kato
- G02 - OPTICS

Patents Applicationslast 30 patents

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
Wavelength multiplexing/demultiplexing unit, wavelength multiplexin...
- Publication number 20030202742
- Publication date Oct 30, 2003
- NTT Electronics Corporation
- Kuniharu Kato
- G02 - OPTICS
Information Patent Application
Wavelength multiplexing/demultiplexing unit, wavelength multiplexin...
- Publication number 20010012424
- Publication date Aug 9, 2001
- Kuniharu Kato
- G02 - OPTICS