Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8462617 | Method for relieving failure, and packet communication device | Yukio Tsukishima, Atsushi Watanabe, Akira Hirano | 2013-06-11 |
| 7961644 | Communication node apparatus, communication system, and path resource assignment method | Yoshiaki Sone, Wataru Imajyuku, Yukio Tsukishima, Kazuhisa Yamada, Atsushi Taniguchi | 2011-06-14 |
| 7313328 | Node used in photonic network, and photonic network | Eiji Oki, Wataru Imajuku, Kohei Shiomoto, Naoaki Yamanaka, Daisaku Shimazaki +1 more | 2007-12-25 |
| 6626590 | Optical communication network | Masafumi Koga | 2003-09-30 |