Hiromi Oohashi

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Kanagawa-ken, JP

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Patents Grantslast 30 patents

Information Patent Grant
Wavelength tunable semiconductor laser device, controller for the s...
- Patent number 7,961,769
- Issue date Jun 14, 2011
- Nippon Telegraph and Telephone Corporation
- Naoki Fujiwara
- B82 - NANO-TECHNOLOGY
Information Patent Grant
Optical amplifier
- Patent number 7,262,905
- Issue date Aug 28, 2007
- Nippon Telegraph and Telephone Corporation
- Yasuo Shibata
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Optical amplifier
- Patent number 7,221,500
- Issue date May 22, 2007
- Nippon Telegraph and Telephone Corporation
- Yasuo Shibata
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Optical amplifier
- Patent number 7,088,501
- Issue date Aug 8, 2006
- Nippon Telegraph and Telephone Corporation
- Yasuo Shibata
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Semiconductor optical amplifier characteristic evaluation method an...
- Patent number 6,728,025
- Issue date Apr 27, 2004
- Nippon Telegraph and Telephone Corporation
- Katsuaki Magari
- H04 - ELECTRIC COMMUNICATION TECHNIQUE

Patents Applicationslast 30 patents

Information Patent Application
Wavelength Tunable Semiconductor Laser Device, Controller for the S...
- Publication number 20100103963
- Publication date Apr 29, 2010
- Nippon Telegraph and Telephone Corporation
- Naoki Fujiwara
- B82 - NANO-TECHNOLOGY
Information Patent Application
Optical amplifier
- Publication number 20060268399
- Publication date Nov 30, 2006
- Yasuo Shibata
- G02 - OPTICS
Information Patent Application
Optical amplifier
- Publication number 20060232851
- Publication date Oct 19, 2006
- Yasuo Shibata
- G02 - OPTICS
Information Patent Application
Semiconductor optical amplifier characteristic evaluation method an...
- Publication number 20030099033
- Publication date May 29, 2003
- Katsuaki Magari
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Optical amplifier
- Publication number 20030067678
- Publication date Apr 10, 2003
- Yasuo Shibata
- G02 - OPTICS