Masaaki Ohtsuka

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Sakura-shi, JP

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Patents Grantslast 30 patents

Information Patent Grant
Optical fiber and optical fiber coupler, erbium-doped optical fiber...
- Patent number 7,711,238
- Issue date May 4, 2010
- Fujikura Ltd.
- Masashi Ikeda
- C03 - GLASS MINERAL OR SLAG WOOL
Information Patent Grant
Optical fiber and optical fiber coupler, erbium-doped optical fiber...
- Patent number 7,406,236
- Issue date Jul 29, 2008
- Fujikura Ltd.
- Masashi Ikeda
- C03 - GLASS MINERAL OR SLAG WOOL
Information Patent Grant
Optical fiber and optical fiber coupler, erbium-doped optical fiber...
- Patent number 7,346,258
- Issue date Mar 18, 2008
- Fujikura Ltd.
- Masashi Ikeda
- C03 - GLASS MINERAL OR SLAG WOOL

Patents Applicationslast 30 patents

Information Patent Application
OPTICAL FIBER AND OPTICAL FIBER COUPLER, ERBIUM-DOPED OPTICAL FIBER...
- Publication number 20080025679
- Publication date Jan 31, 2008
- FUJIKURA LTD.
- Masashi Ikeda
- G02 - OPTICS
Information Patent Application
OPTICAL FIBER AND OPTICAL FIBER COUPLER, ERBIUM-DOPED OPTICAL FIBER...
- Publication number 20060140565
- Publication date Jun 29, 2006
- FUJIKURA LTD.
- Masashi Ikeda
- G02 - OPTICS
Information Patent Application
Optical fiber and optical fiber coupler, erbium-doped optical fiber...
- Publication number 20050135762
- Publication date Jun 23, 2005
- FUJIKURA LTD.
- Masashi Ikeda
- G02 - OPTICS