Issued Patents All Time
Showing 26–41 of 41 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8345538 | Apparatus and method for finding a pair of disjoint paths in a communication network | Tomohiro Hashiguchi, Toru Katagiri, Kazuyuki Tajima | 2013-01-01 |
| 8315161 | Network design device and network design method | Kazuyuki Tajima, Toru Katagiri, Tomohiro Hashiguchi | 2012-11-20 |
| 8275259 | Method for determining value of chromatic dispersion compensation | Toru Katagiri, Tomohiro Hashiguchi, Kazuyuki Tajima | 2012-09-25 |
| 8270829 | Apparatus and method for designing network | Tomohiro Hashiguchi, Toru Katagiri, Kazuyuki Tajima | 2012-09-18 |
| 8249453 | Optical communication system | Susumu Kinoshita | 2012-08-21 |
| 8190031 | Optical network design apparatus and dispersion compensation design method | Kazuyuki Tajima, Toru Katagiri, Tomohiro Hashiguchi | 2012-05-29 |
| 8121481 | Chromatic dispersion compensation designing method in optical network and a system thereof | Toru Katagiri, Tomohiro Hashiguchi, Kazuyuki Tajima, Motoyoshi Sekiya, Takashi Toyomaki | 2012-02-21 |
| 8121477 | Optical node apparatus | — | 2012-02-21 |
| 8068732 | Network design apparatus and network design method | Tomohiro Hashiguchi, Toru Katagiri, Kazuyuki Tajima | 2011-11-29 |
| 8032028 | Optical add/drop device | Yutaka Kai, Yasuhiko Aoki, Kyosuke Sone | 2011-10-04 |
| 7613394 | Optical switching device | — | 2009-11-03 |
| 7598781 | Capacitive load driving device | — | 2009-10-06 |
| 7405859 | Method and apparatus for selecting wavelength | — | 2008-07-29 |
| 7315557 | Multi-wavelength light source apparatus | Fumio Futami, Shigeki Watanabe | 2008-01-01 |
| 7308168 | Optical switch apparatus and control information updating method therein | Yutaka Kai | 2007-12-11 |
| 7088491 | Pulse generating apparatus and method | Shigeki Watanabe, Fumio Futami | 2006-08-08 |