Koichi Yoshida

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Ibaraki, JP

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Patents Grantslast 30 patents

Information Patent Grant
Method of switching optical path, and apparatus thereof
- Patent number 8,718,467
- Issue date May 6, 2014
- Nippon Telegraph and Telephone Corporation
- Takeshi Tsujimura
- H04 - ELECTRIC COMMUNICATION TECHNIQUE

Patents Applicationslast 30 patents

Information Patent Application
METHOD OF SWITCHING OPTICAL PATH, AND APPARATUS THEREOF
- Publication number 20110236015
- Publication date Sep 29, 2011
- Takeshi Tsujimura
- H04 - ELECTRIC COMMUNICATION TECHNIQUE