Kohei Yanaka

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Nishikamo-gun, JP

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Patents Grantslast 30 patents

Information Patent Grant
Optical fiber laser and exciting method using same
- Patent number 7,903,695
- Issue date Mar 8, 2011
- Hitachi Cable, Ltd.
- Seiji Kojima
- H01 - BASIC ELECTRIC ELEMENTS

Patents Applicationslast 30 patents

Information Patent Application
OPTICAL FIBER FOR A FIBER LASER AND FIBER LASER USING THE SAME
- Publication number 20090316733
- Publication date Dec 24, 2009
- Bing Yao
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
OPTICAL FIBER LASER AND EXCITING METHOD USING SAME
- Publication number 20090129411
- Publication date May 21, 2009
- Seiji Kojima
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
Optical waveguide type optical coupling arrangement
- Publication number 20090052840
- Publication date Feb 26, 2009
- Hitachi Cable, Ltd.
- Seiji Kojima
- G02 - OPTICS