Kouji Enbutsu

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Atsugi-shi, JP

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Patents Grantslast 30 patents

Information Patent Grant
Optical amplifier
- Patent number 9,065,243
- Issue date Jun 23, 2015
- Nippon Telegraph and Telephone Corporation
- Masaki Asobe
- G02 - OPTICS
Information Patent Grant
Optical fiber and production method thereof
- Patent number 7,953,309
- Issue date May 31, 2011
- Nippon Telegraph and Telephone Corporation
- Atsushi Mori
- C03 - GLASS MINERAL OR SLAG WOOL
Information Patent Grant
Tellurite optical fiber and production method thereof
- Patent number 7,677,059
- Issue date Mar 16, 2010
- Nippon Telegraph and Telephone Corporation
- Atsushi Mori
- C03 - GLASS MINERAL OR SLAG WOOL

Patents Applicationslast 30 patents

Information Patent Application
OPTICAL AMPLIFIER DEVICE
- Publication number 20150036210
- Publication date Feb 5, 2015
- Masaki Asobe
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
OPTICAL FIBER AND PRODUCTION METHOD THEREOF
- Publication number 20090060438
- Publication date Mar 5, 2009
- Nippon Telegraph and Telephone Corporation
- Atsushi Mori
- G02 - OPTICS
Information Patent Application
Optical fiber and production method thereof
- Publication number 20060010921
- Publication date Jan 19, 2006
- Atsushi Mori
- G02 - OPTICS